diff --git a/.gradle/8.10/fileHashes/fileHashes.bin b/.gradle/8.10/fileHashes/fileHashes.bin
index 81812ce..54a4e9c 100644
Binary files a/.gradle/8.10/fileHashes/fileHashes.bin and b/.gradle/8.10/fileHashes/fileHashes.bin differ
diff --git a/.gradle/8.10/fileHashes/fileHashes.lock b/.gradle/8.10/fileHashes/fileHashes.lock
index 3482644..0270086 100644
Binary files a/.gradle/8.10/fileHashes/fileHashes.lock and b/.gradle/8.10/fileHashes/fileHashes.lock differ
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index f9163b4..065275f 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -1,9 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="delegatedBuild" value="false" />
+        <option name="testRunner" value="PLATFORM" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="17" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 87a20fc..fe0b0da 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="FrameworkDetectionExcludesConfiguration">
+    <file type="web" url="file://$PROJECT_DIR$" />
+  </component>
   <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..48b24f8
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/algorithm.main.iml" filepath="$PROJECT_DIR$/.idea/modules/algorithm.main.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules/algorithm.main.iml b/.idea/modules/algorithm.main.iml
new file mode 100644
index 0000000..d6ff951
--- /dev/null
+++ b/.idea/modules/algorithm.main.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module version="4">
+  <component name="AdditionalModuleElements">
+    <content url="file://$MODULE_DIR$/../../src/main" dumb="true">
+      <sourceFolder url="file://$MODULE_DIR$/../../src/main/java" isTestSource="false" />
+    </content>
+  </component>
+</module>
\ No newline at end of file
diff --git a/src/basic/datastructure/test/list/ArrayListTest.java b/src/basic/datastructure/test/list/ArrayListTest.java
deleted file mode 100644
index 3d7c191..0000000
--- a/src/basic/datastructure/test/list/ArrayListTest.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package basic.datastructure.test.list;
-
-public class ArrayListTest {
-}
diff --git a/src/baekjoon/baekJoon/BaekJoon1002.java b/src/main/java/baekjoon/baekJoon/BaekJoon1002.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon1002.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon1002.java
diff --git a/src/baekjoon/baekJoon/BaekJoon1003.java b/src/main/java/baekjoon/baekJoon/BaekJoon1003.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon1003.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon1003.java
diff --git a/src/baekjoon/baekJoon/BaekJoon1152.java b/src/main/java/baekjoon/baekJoon/BaekJoon1152.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon1152.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon1152.java
diff --git a/src/baekjoon/baekJoon/BaekJoon1237.java b/src/main/java/baekjoon/baekJoon/BaekJoon1237.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon1237.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon1237.java
diff --git a/src/baekjoon/baekJoon/BaekJoon1308.java b/src/main/java/baekjoon/baekJoon/BaekJoon1308.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon1308.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon1308.java
diff --git a/src/baekjoon/baekJoon/BaekJoon16719.java b/src/main/java/baekjoon/baekJoon/BaekJoon16719.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon16719.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon16719.java
diff --git a/src/baekjoon/baekJoon/BaekJoon2508.java b/src/main/java/baekjoon/baekJoon/BaekJoon2508.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon2508.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon2508.java
diff --git a/src/baekjoon/baekJoon/BaekJoon2668.java b/src/main/java/baekjoon/baekJoon/BaekJoon2668.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon2668.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon2668.java
diff --git a/src/baekjoon/baekJoon/BaekJoon9494.java b/src/main/java/baekjoon/baekJoon/BaekJoon9494.java
similarity index 100%
rename from src/baekjoon/baekJoon/BaekJoon9494.java
rename to src/main/java/baekjoon/baekJoon/BaekJoon9494.java
diff --git a/src/baekjoon/bronze/BackJoon15740.java b/src/main/java/baekjoon/bronze/BackJoon15740.java
similarity index 100%
rename from src/baekjoon/bronze/BackJoon15740.java
rename to src/main/java/baekjoon/bronze/BackJoon15740.java
diff --git a/src/baekjoon/bronze/BaekJoon1009.java b/src/main/java/baekjoon/bronze/BaekJoon1009.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon1009.java
rename to src/main/java/baekjoon/bronze/BaekJoon1009.java
diff --git a/src/baekjoon/bronze/BaekJoon10170.java b/src/main/java/baekjoon/bronze/BaekJoon10170.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon10170.java
rename to src/main/java/baekjoon/bronze/BaekJoon10170.java
diff --git a/src/baekjoon/bronze/BaekJoon1032.java b/src/main/java/baekjoon/bronze/BaekJoon1032.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon1032.java
rename to src/main/java/baekjoon/bronze/BaekJoon1032.java
diff --git a/src/baekjoon/bronze/BaekJoon10757.java b/src/main/java/baekjoon/bronze/BaekJoon10757.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon10757.java
rename to src/main/java/baekjoon/bronze/BaekJoon10757.java
diff --git a/src/baekjoon/bronze/BaekJoon10807.java b/src/main/java/baekjoon/bronze/BaekJoon10807.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon10807.java
rename to src/main/java/baekjoon/bronze/BaekJoon10807.java
diff --git a/src/baekjoon/bronze/BaekJoon10872.java b/src/main/java/baekjoon/bronze/BaekJoon10872.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon10872.java
rename to src/main/java/baekjoon/bronze/BaekJoon10872.java
diff --git a/src/baekjoon/bronze/BaekJoon10984.java b/src/main/java/baekjoon/bronze/BaekJoon10984.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon10984.java
rename to src/main/java/baekjoon/bronze/BaekJoon10984.java
diff --git a/src/baekjoon/bronze/BaekJoon11021.java b/src/main/java/baekjoon/bronze/BaekJoon11021.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon11021.java
rename to src/main/java/baekjoon/bronze/BaekJoon11021.java
diff --git a/src/baekjoon/bronze/BaekJoon11022.java b/src/main/java/baekjoon/bronze/BaekJoon11022.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon11022.java
rename to src/main/java/baekjoon/bronze/BaekJoon11022.java
diff --git a/src/baekjoon/bronze/BaekJoon11117.java b/src/main/java/baekjoon/bronze/BaekJoon11117.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon11117.java
rename to src/main/java/baekjoon/bronze/BaekJoon11117.java
diff --git a/src/baekjoon/bronze/BaekJoon11718.java b/src/main/java/baekjoon/bronze/BaekJoon11718.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon11718.java
rename to src/main/java/baekjoon/bronze/BaekJoon11718.java
diff --git a/src/baekjoon/bronze/BaekJoon11942.java b/src/main/java/baekjoon/bronze/BaekJoon11942.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon11942.java
rename to src/main/java/baekjoon/bronze/BaekJoon11942.java
diff --git a/src/baekjoon/bronze/BaekJoon1231231231.java b/src/main/java/baekjoon/bronze/BaekJoon1231231231.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon1231231231.java
rename to src/main/java/baekjoon/bronze/BaekJoon1231231231.java
diff --git a/src/baekjoon/bronze/BaekJoon1236.java b/src/main/java/baekjoon/bronze/BaekJoon1236.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon1236.java
rename to src/main/java/baekjoon/bronze/BaekJoon1236.java
diff --git a/src/baekjoon/bronze/BaekJoon12595.java b/src/main/java/baekjoon/bronze/BaekJoon12595.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon12595.java
rename to src/main/java/baekjoon/bronze/BaekJoon12595.java
diff --git a/src/baekjoon/bronze/BaekJoon13228.java b/src/main/java/baekjoon/bronze/BaekJoon13228.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon13228.java
rename to src/main/java/baekjoon/bronze/BaekJoon13228.java
diff --git a/src/baekjoon/bronze/BaekJoon14456.java b/src/main/java/baekjoon/bronze/BaekJoon14456.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon14456.java
rename to src/main/java/baekjoon/bronze/BaekJoon14456.java
diff --git a/src/baekjoon/bronze/BaekJoon14491.java b/src/main/java/baekjoon/bronze/BaekJoon14491.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon14491.java
rename to src/main/java/baekjoon/bronze/BaekJoon14491.java
diff --git a/src/baekjoon/bronze/BaekJoon14645.java b/src/main/java/baekjoon/bronze/BaekJoon14645.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon14645.java
rename to src/main/java/baekjoon/bronze/BaekJoon14645.java
diff --git a/src/baekjoon/bronze/BaekJoon14928.java b/src/main/java/baekjoon/bronze/BaekJoon14928.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon14928.java
rename to src/main/java/baekjoon/bronze/BaekJoon14928.java
diff --git a/src/baekjoon/bronze/BaekJoon15000.java b/src/main/java/baekjoon/bronze/BaekJoon15000.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15000.java
rename to src/main/java/baekjoon/bronze/BaekJoon15000.java
diff --git a/src/baekjoon/bronze/BaekJoon15115.java b/src/main/java/baekjoon/bronze/BaekJoon15115.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15115.java
rename to src/main/java/baekjoon/bronze/BaekJoon15115.java
diff --git a/src/baekjoon/bronze/BaekJoon15232.java b/src/main/java/baekjoon/bronze/BaekJoon15232.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15232.java
rename to src/main/java/baekjoon/bronze/BaekJoon15232.java
diff --git a/src/baekjoon/bronze/BaekJoon1551.java b/src/main/java/baekjoon/bronze/BaekJoon1551.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon1551.java
rename to src/main/java/baekjoon/bronze/BaekJoon1551.java
diff --git a/src/baekjoon/bronze/BaekJoon15552.java b/src/main/java/baekjoon/bronze/BaekJoon15552.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15552.java
rename to src/main/java/baekjoon/bronze/BaekJoon15552.java
diff --git a/src/baekjoon/bronze/BaekJoon15680.java b/src/main/java/baekjoon/bronze/BaekJoon15680.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15680.java
rename to src/main/java/baekjoon/bronze/BaekJoon15680.java
diff --git a/src/baekjoon/bronze/BaekJoon15700.java b/src/main/java/baekjoon/bronze/BaekJoon15700.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15700.java
rename to src/main/java/baekjoon/bronze/BaekJoon15700.java
diff --git a/src/baekjoon/bronze/BaekJoon15727.java b/src/main/java/baekjoon/bronze/BaekJoon15727.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15727.java
rename to src/main/java/baekjoon/bronze/BaekJoon15727.java
diff --git a/src/baekjoon/bronze/BaekJoon15733.java b/src/main/java/baekjoon/bronze/BaekJoon15733.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15733.java
rename to src/main/java/baekjoon/bronze/BaekJoon15733.java
diff --git a/src/baekjoon/bronze/BaekJoon15917.java b/src/main/java/baekjoon/bronze/BaekJoon15917.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15917.java
rename to src/main/java/baekjoon/bronze/BaekJoon15917.java
diff --git a/src/baekjoon/bronze/BaekJoon15962.java b/src/main/java/baekjoon/bronze/BaekJoon15962.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15962.java
rename to src/main/java/baekjoon/bronze/BaekJoon15962.java
diff --git a/src/baekjoon/bronze/BaekJoon15963.java b/src/main/java/baekjoon/bronze/BaekJoon15963.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15963.java
rename to src/main/java/baekjoon/bronze/BaekJoon15963.java
diff --git a/src/baekjoon/bronze/BaekJoon15964.java b/src/main/java/baekjoon/bronze/BaekJoon15964.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon15964.java
rename to src/main/java/baekjoon/bronze/BaekJoon15964.java
diff --git a/src/baekjoon/bronze/BaekJoon16170.java b/src/main/java/baekjoon/bronze/BaekJoon16170.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon16170.java
rename to src/main/java/baekjoon/bronze/BaekJoon16170.java
diff --git a/src/baekjoon/bronze/BaekJoon16394.java b/src/main/java/baekjoon/bronze/BaekJoon16394.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon16394.java
rename to src/main/java/baekjoon/bronze/BaekJoon16394.java
diff --git a/src/baekjoon/bronze/BaekJoon20492.java b/src/main/java/baekjoon/bronze/BaekJoon20492.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon20492.java
rename to src/main/java/baekjoon/bronze/BaekJoon20492.java
diff --git a/src/baekjoon/bronze/BaekJoon2083.java b/src/main/java/baekjoon/bronze/BaekJoon2083.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2083.java
rename to src/main/java/baekjoon/bronze/BaekJoon2083.java
diff --git a/src/baekjoon/bronze/BaekJoon21623.java b/src/main/java/baekjoon/bronze/BaekJoon21623.java
similarity index 97%
rename from src/baekjoon/bronze/BaekJoon21623.java
rename to src/main/java/baekjoon/bronze/BaekJoon21623.java
index 245a60e..b3cbd12 100644
--- a/src/baekjoon/bronze/BaekJoon21623.java
+++ b/src/main/java/baekjoon/bronze/BaekJoon21623.java
@@ -1,6 +1,5 @@
 package baekjoon.bronze;
 
-import kotlin._Assertions;
 
 import java.io.BufferedReader;
 import java.io.IOException;
diff --git a/src/baekjoon/bronze/BaekJoon2163.java b/src/main/java/baekjoon/bronze/BaekJoon2163.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2163.java
rename to src/main/java/baekjoon/bronze/BaekJoon2163.java
diff --git a/src/baekjoon/bronze/BaekJoon23080.java b/src/main/java/baekjoon/bronze/BaekJoon23080.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon23080.java
rename to src/main/java/baekjoon/bronze/BaekJoon23080.java
diff --git a/src/baekjoon/bronze/BaekJoon2393.java b/src/main/java/baekjoon/bronze/BaekJoon2393.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2393.java
rename to src/main/java/baekjoon/bronze/BaekJoon2393.java
diff --git a/src/baekjoon/bronze/BaekJoon2446.java b/src/main/java/baekjoon/bronze/BaekJoon2446.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2446.java
rename to src/main/java/baekjoon/bronze/BaekJoon2446.java
diff --git a/src/baekjoon/bronze/BaekJoon24603.java b/src/main/java/baekjoon/bronze/BaekJoon24603.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon24603.java
rename to src/main/java/baekjoon/bronze/BaekJoon24603.java
diff --git a/src/baekjoon/bronze/BaekJoon24736.java b/src/main/java/baekjoon/bronze/BaekJoon24736.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon24736.java
rename to src/main/java/baekjoon/bronze/BaekJoon24736.java
diff --git a/src/baekjoon/bronze/BaekJoon24751.java b/src/main/java/baekjoon/bronze/BaekJoon24751.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon24751.java
rename to src/main/java/baekjoon/bronze/BaekJoon24751.java
diff --git a/src/baekjoon/bronze/BaekJoon2525.java b/src/main/java/baekjoon/bronze/BaekJoon2525.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2525.java
rename to src/main/java/baekjoon/bronze/BaekJoon2525.java
diff --git a/src/baekjoon/bronze/BaekJoon25841.java b/src/main/java/baekjoon/bronze/BaekJoon25841.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon25841.java
rename to src/main/java/baekjoon/bronze/BaekJoon25841.java
diff --git a/src/baekjoon/bronze/BaekJoon26489.java b/src/main/java/baekjoon/bronze/BaekJoon26489.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon26489.java
rename to src/main/java/baekjoon/bronze/BaekJoon26489.java
diff --git a/src/baekjoon/bronze/BaekJoon2738.java b/src/main/java/baekjoon/bronze/BaekJoon2738.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2738.java
rename to src/main/java/baekjoon/bronze/BaekJoon2738.java
diff --git a/src/baekjoon/bronze/BaekJoon2743.java b/src/main/java/baekjoon/bronze/BaekJoon2743.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2743.java
rename to src/main/java/baekjoon/bronze/BaekJoon2743.java
diff --git a/src/baekjoon/bronze/BaekJoon2744.java b/src/main/java/baekjoon/bronze/BaekJoon2744.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2744.java
rename to src/main/java/baekjoon/bronze/BaekJoon2744.java
diff --git a/src/baekjoon/bronze/BaekJoon2754.java b/src/main/java/baekjoon/bronze/BaekJoon2754.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2754.java
rename to src/main/java/baekjoon/bronze/BaekJoon2754.java
diff --git a/src/baekjoon/bronze/BaekJoon28281.java b/src/main/java/baekjoon/bronze/BaekJoon28281.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon28281.java
rename to src/main/java/baekjoon/bronze/BaekJoon28281.java
diff --git a/src/baekjoon/bronze/BaekJoon2947.java b/src/main/java/baekjoon/bronze/BaekJoon2947.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon2947.java
rename to src/main/java/baekjoon/bronze/BaekJoon2947.java
diff --git a/src/baekjoon/bronze/BaekJoon29751.java b/src/main/java/baekjoon/bronze/BaekJoon29751.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon29751.java
rename to src/main/java/baekjoon/bronze/BaekJoon29751.java
diff --git a/src/baekjoon/bronze/BaekJoon3003.java b/src/main/java/baekjoon/bronze/BaekJoon3003.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon3003.java
rename to src/main/java/baekjoon/bronze/BaekJoon3003.java
diff --git a/src/baekjoon/bronze/BaekJoon31832.java b/src/main/java/baekjoon/bronze/BaekJoon31832.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon31832.java
rename to src/main/java/baekjoon/bronze/BaekJoon31832.java
diff --git a/src/baekjoon/bronze/BaekJoon3733.java b/src/main/java/baekjoon/bronze/BaekJoon3733.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon3733.java
rename to src/main/java/baekjoon/bronze/BaekJoon3733.java
diff --git a/src/baekjoon/bronze/BaekJoon4101.java b/src/main/java/baekjoon/bronze/BaekJoon4101.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon4101.java
rename to src/main/java/baekjoon/bronze/BaekJoon4101.java
diff --git a/src/baekjoon/bronze/BaekJoon4890.java b/src/main/java/baekjoon/bronze/BaekJoon4890.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon4890.java
rename to src/main/java/baekjoon/bronze/BaekJoon4890.java
diff --git a/src/baekjoon/bronze/BaekJoon5341.java b/src/main/java/baekjoon/bronze/BaekJoon5341.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon5341.java
rename to src/main/java/baekjoon/bronze/BaekJoon5341.java
diff --git a/src/baekjoon/bronze/BaekJoon5365.java b/src/main/java/baekjoon/bronze/BaekJoon5365.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon5365.java
rename to src/main/java/baekjoon/bronze/BaekJoon5365.java
diff --git a/src/baekjoon/bronze/BaekJoon5522.java b/src/main/java/baekjoon/bronze/BaekJoon5522.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon5522.java
rename to src/main/java/baekjoon/bronze/BaekJoon5522.java
diff --git a/src/baekjoon/bronze/BaekJoon5597.java b/src/main/java/baekjoon/bronze/BaekJoon5597.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon5597.java
rename to src/main/java/baekjoon/bronze/BaekJoon5597.java
diff --git a/src/baekjoon/bronze/BaekJoon6840.java b/src/main/java/baekjoon/bronze/BaekJoon6840.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon6840.java
rename to src/main/java/baekjoon/bronze/BaekJoon6840.java
diff --git a/src/baekjoon/bronze/BaekJoon7891.java b/src/main/java/baekjoon/bronze/BaekJoon7891.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon7891.java
rename to src/main/java/baekjoon/bronze/BaekJoon7891.java
diff --git a/src/baekjoon/bronze/BaekJoon8370.java b/src/main/java/baekjoon/bronze/BaekJoon8370.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon8370.java
rename to src/main/java/baekjoon/bronze/BaekJoon8370.java
diff --git a/src/baekjoon/bronze/BaekJoon8437.java b/src/main/java/baekjoon/bronze/BaekJoon8437.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon8437.java
rename to src/main/java/baekjoon/bronze/BaekJoon8437.java
diff --git a/src/baekjoon/bronze/BaekJoon8545.java b/src/main/java/baekjoon/bronze/BaekJoon8545.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon8545.java
rename to src/main/java/baekjoon/bronze/BaekJoon8545.java
diff --git a/src/baekjoon/bronze/BaekJoon8871.java b/src/main/java/baekjoon/bronze/BaekJoon8871.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon8871.java
rename to src/main/java/baekjoon/bronze/BaekJoon8871.java
diff --git a/src/baekjoon/bronze/BaekJoon9086.java b/src/main/java/baekjoon/bronze/BaekJoon9086.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon9086.java
rename to src/main/java/baekjoon/bronze/BaekJoon9086.java
diff --git a/src/baekjoon/bronze/BaekJoon9654.java b/src/main/java/baekjoon/bronze/BaekJoon9654.java
similarity index 100%
rename from src/baekjoon/bronze/BaekJoon9654.java
rename to src/main/java/baekjoon/bronze/BaekJoon9654.java
diff --git a/src/baekjoon/bronze/Baekjoon1350.java b/src/main/java/baekjoon/bronze/Baekjoon1350.java
similarity index 100%
rename from src/baekjoon/bronze/Baekjoon1350.java
rename to src/main/java/baekjoon/bronze/Baekjoon1350.java
diff --git a/src/baekjoon/bronze/Baekjoon14581.java b/src/main/java/baekjoon/bronze/Baekjoon14581.java
similarity index 100%
rename from src/baekjoon/bronze/Baekjoon14581.java
rename to src/main/java/baekjoon/bronze/Baekjoon14581.java
diff --git a/src/baekjoon/class1/BaekJoon10171.java b/src/main/java/baekjoon/class1/BaekJoon10171.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon10171.java
rename to src/main/java/baekjoon/class1/BaekJoon10171.java
diff --git a/src/baekjoon/class1/BaekJoon10172.java b/src/main/java/baekjoon/class1/BaekJoon10172.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon10172.java
rename to src/main/java/baekjoon/class1/BaekJoon10172.java
diff --git a/src/baekjoon/class1/BaekJoon10250.java b/src/main/java/baekjoon/class1/BaekJoon10250.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon10250.java
rename to src/main/java/baekjoon/class1/BaekJoon10250.java
diff --git a/src/baekjoon/class1/BaekJoon10809.java b/src/main/java/baekjoon/class1/BaekJoon10809.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon10809.java
rename to src/main/java/baekjoon/class1/BaekJoon10809.java
diff --git a/src/baekjoon/class1/BaekJoon10818.java b/src/main/java/baekjoon/class1/BaekJoon10818.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon10818.java
rename to src/main/java/baekjoon/class1/BaekJoon10818.java
diff --git a/src/baekjoon/class1/BaekJoon10950.java b/src/main/java/baekjoon/class1/BaekJoon10950.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon10950.java
rename to src/main/java/baekjoon/class1/BaekJoon10950.java
diff --git a/src/baekjoon/class1/BaekJoon10952.java b/src/main/java/baekjoon/class1/BaekJoon10952.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon10952.java
rename to src/main/java/baekjoon/class1/BaekJoon10952.java
diff --git a/src/baekjoon/class1/BaekJoon1152.java b/src/main/java/baekjoon/class1/BaekJoon1152.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon1152.java
rename to src/main/java/baekjoon/class1/BaekJoon1152.java
diff --git a/src/baekjoon/class1/BaekJoon11654.java b/src/main/java/baekjoon/class1/BaekJoon11654.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon11654.java
rename to src/main/java/baekjoon/class1/BaekJoon11654.java
diff --git a/src/baekjoon/class1/BaekJoon11720.java b/src/main/java/baekjoon/class1/BaekJoon11720.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon11720.java
rename to src/main/java/baekjoon/class1/BaekJoon11720.java
diff --git a/src/baekjoon/class1/BaekJoon1330.java b/src/main/java/baekjoon/class1/BaekJoon1330.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon1330.java
rename to src/main/java/baekjoon/class1/BaekJoon1330.java
diff --git a/src/baekjoon/class1/BaekJoon2438.java b/src/main/java/baekjoon/class1/BaekJoon2438.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2438.java
rename to src/main/java/baekjoon/class1/BaekJoon2438.java
diff --git a/src/baekjoon/class1/BaekJoon2439.java b/src/main/java/baekjoon/class1/BaekJoon2439.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2439.java
rename to src/main/java/baekjoon/class1/BaekJoon2439.java
diff --git a/src/baekjoon/class1/BaekJoon2475.java b/src/main/java/baekjoon/class1/BaekJoon2475.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2475.java
rename to src/main/java/baekjoon/class1/BaekJoon2475.java
diff --git a/src/baekjoon/class1/BaekJoon25083.java b/src/main/java/baekjoon/class1/BaekJoon25083.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon25083.java
rename to src/main/java/baekjoon/class1/BaekJoon25083.java
diff --git a/src/baekjoon/class1/BaekJoon2577.java b/src/main/java/baekjoon/class1/BaekJoon2577.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2577.java
rename to src/main/java/baekjoon/class1/BaekJoon2577.java
diff --git a/src/baekjoon/class1/BaekJoon2675.java b/src/main/java/baekjoon/class1/BaekJoon2675.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2675.java
rename to src/main/java/baekjoon/class1/BaekJoon2675.java
diff --git a/src/baekjoon/class1/BaekJoon2739.java b/src/main/java/baekjoon/class1/BaekJoon2739.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2739.java
rename to src/main/java/baekjoon/class1/BaekJoon2739.java
diff --git a/src/baekjoon/class1/BaekJoon2741.java b/src/main/java/baekjoon/class1/BaekJoon2741.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2741.java
rename to src/main/java/baekjoon/class1/BaekJoon2741.java
diff --git a/src/baekjoon/class1/BaekJoon2753.java b/src/main/java/baekjoon/class1/BaekJoon2753.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2753.java
rename to src/main/java/baekjoon/class1/BaekJoon2753.java
diff --git a/src/baekjoon/class1/BaekJoon27866.java b/src/main/java/baekjoon/class1/BaekJoon27866.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon27866.java
rename to src/main/java/baekjoon/class1/BaekJoon27866.java
diff --git a/src/baekjoon/class1/BaekJoon2884.java b/src/main/java/baekjoon/class1/BaekJoon2884.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2884.java
rename to src/main/java/baekjoon/class1/BaekJoon2884.java
diff --git a/src/baekjoon/class1/BaekJoon2920.java b/src/main/java/baekjoon/class1/BaekJoon2920.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon2920.java
rename to src/main/java/baekjoon/class1/BaekJoon2920.java
diff --git a/src/baekjoon/class1/BaekJoon3052.java b/src/main/java/baekjoon/class1/BaekJoon3052.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon3052.java
rename to src/main/java/baekjoon/class1/BaekJoon3052.java
diff --git a/src/baekjoon/class1/BaekJoon8958.java b/src/main/java/baekjoon/class1/BaekJoon8958.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon8958.java
rename to src/main/java/baekjoon/class1/BaekJoon8958.java
diff --git a/src/baekjoon/class1/BaekJoon9498.java b/src/main/java/baekjoon/class1/BaekJoon9498.java
similarity index 100%
rename from src/baekjoon/class1/BaekJoon9498.java
rename to src/main/java/baekjoon/class1/BaekJoon9498.java
diff --git a/src/baekjoon/class1/BeakJoon10871.java b/src/main/java/baekjoon/class1/BeakJoon10871.java
similarity index 100%
rename from src/baekjoon/class1/BeakJoon10871.java
rename to src/main/java/baekjoon/class1/BeakJoon10871.java
diff --git a/src/baekjoon/class2/BackJoon11050.java b/src/main/java/baekjoon/class2/BackJoon11050.java
similarity index 100%
rename from src/baekjoon/class2/BackJoon11050.java
rename to src/main/java/baekjoon/class2/BackJoon11050.java
diff --git a/src/baekjoon/class2/BackJoon2751.java b/src/main/java/baekjoon/class2/BackJoon2751.java
similarity index 100%
rename from src/baekjoon/class2/BackJoon2751.java
rename to src/main/java/baekjoon/class2/BackJoon2751.java
diff --git a/src/baekjoon/class2/BackJoon4153.java b/src/main/java/baekjoon/class2/BackJoon4153.java
similarity index 100%
rename from src/baekjoon/class2/BackJoon4153.java
rename to src/main/java/baekjoon/class2/BackJoon4153.java
diff --git a/src/baekjoon/class2/BaekJoon1018.java b/src/main/java/baekjoon/class2/BaekJoon1018.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1018.java
rename to src/main/java/baekjoon/class2/BaekJoon1018.java
diff --git a/src/baekjoon/class2/BaekJoon10814.java b/src/main/java/baekjoon/class2/BaekJoon10814.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon10814.java
rename to src/main/java/baekjoon/class2/BaekJoon10814.java
diff --git a/src/baekjoon/class2/BaekJoon10816.java b/src/main/java/baekjoon/class2/BaekJoon10816.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon10816.java
rename to src/main/java/baekjoon/class2/BaekJoon10816.java
diff --git a/src/baekjoon/class2/BaekJoon10828.java b/src/main/java/baekjoon/class2/BaekJoon10828.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon10828.java
rename to src/main/java/baekjoon/class2/BaekJoon10828.java
diff --git a/src/baekjoon/class2/BaekJoon10845.java b/src/main/java/baekjoon/class2/BaekJoon10845.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon10845.java
rename to src/main/java/baekjoon/class2/BaekJoon10845.java
diff --git a/src/baekjoon/class2/BaekJoon10866.java b/src/main/java/baekjoon/class2/BaekJoon10866.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon10866.java
rename to src/main/java/baekjoon/class2/BaekJoon10866.java
diff --git a/src/baekjoon/class2/BaekJoon10989.java b/src/main/java/baekjoon/class2/BaekJoon10989.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon10989.java
rename to src/main/java/baekjoon/class2/BaekJoon10989.java
diff --git a/src/baekjoon/class2/BaekJoon11650.java b/src/main/java/baekjoon/class2/BaekJoon11650.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon11650.java
rename to src/main/java/baekjoon/class2/BaekJoon11650.java
diff --git a/src/baekjoon/class2/BaekJoon11651.java b/src/main/java/baekjoon/class2/BaekJoon11651.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon11651.java
rename to src/main/java/baekjoon/class2/BaekJoon11651.java
diff --git a/src/baekjoon/class2/BaekJoon1181.java b/src/main/java/baekjoon/class2/BaekJoon1181.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1181.java
rename to src/main/java/baekjoon/class2/BaekJoon1181.java
diff --git a/src/baekjoon/class2/BaekJoon11866.java b/src/main/java/baekjoon/class2/BaekJoon11866.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon11866.java
rename to src/main/java/baekjoon/class2/BaekJoon11866.java
diff --git a/src/baekjoon/class2/BaekJoon1259.java b/src/main/java/baekjoon/class2/BaekJoon1259.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1259.java
rename to src/main/java/baekjoon/class2/BaekJoon1259.java
diff --git a/src/baekjoon/class2/BaekJoon1436.java b/src/main/java/baekjoon/class2/BaekJoon1436.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1436.java
rename to src/main/java/baekjoon/class2/BaekJoon1436.java
diff --git a/src/baekjoon/class2/BaekJoon1546.java b/src/main/java/baekjoon/class2/BaekJoon1546.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1546.java
rename to src/main/java/baekjoon/class2/BaekJoon1546.java
diff --git a/src/baekjoon/class2/BaekJoon15829.java b/src/main/java/baekjoon/class2/BaekJoon15829.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon15829.java
rename to src/main/java/baekjoon/class2/BaekJoon15829.java
diff --git a/src/baekjoon/class2/BaekJoon1654.java b/src/main/java/baekjoon/class2/BaekJoon1654.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1654.java
rename to src/main/java/baekjoon/class2/BaekJoon1654.java
diff --git a/src/baekjoon/class2/BaekJoon1676.java b/src/main/java/baekjoon/class2/BaekJoon1676.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1676.java
rename to src/main/java/baekjoon/class2/BaekJoon1676.java
diff --git a/src/baekjoon/class2/BaekJoon18110.java b/src/main/java/baekjoon/class2/BaekJoon18110.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon18110.java
rename to src/main/java/baekjoon/class2/BaekJoon18110.java
diff --git a/src/baekjoon/class2/BaekJoon18111.java b/src/main/java/baekjoon/class2/BaekJoon18111.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon18111.java
rename to src/main/java/baekjoon/class2/BaekJoon18111.java
diff --git a/src/baekjoon/class2/BaekJoon1874.java b/src/main/java/baekjoon/class2/BaekJoon1874.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1874.java
rename to src/main/java/baekjoon/class2/BaekJoon1874.java
diff --git a/src/baekjoon/class2/BaekJoon1920.java b/src/main/java/baekjoon/class2/BaekJoon1920.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1920.java
rename to src/main/java/baekjoon/class2/BaekJoon1920.java
diff --git a/src/baekjoon/class2/BaekJoon1929.java b/src/main/java/baekjoon/class2/BaekJoon1929.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1929.java
rename to src/main/java/baekjoon/class2/BaekJoon1929.java
diff --git a/src/baekjoon/class2/BaekJoon1966.java b/src/main/java/baekjoon/class2/BaekJoon1966.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1966.java
rename to src/main/java/baekjoon/class2/BaekJoon1966.java
diff --git a/src/baekjoon/class2/BaekJoon1978.java b/src/main/java/baekjoon/class2/BaekJoon1978.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon1978.java
rename to src/main/java/baekjoon/class2/BaekJoon1978.java
diff --git a/src/baekjoon/class2/BaekJoon2108.java b/src/main/java/baekjoon/class2/BaekJoon2108.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2108.java
rename to src/main/java/baekjoon/class2/BaekJoon2108.java
diff --git a/src/baekjoon/class2/BaekJoon2164.java b/src/main/java/baekjoon/class2/BaekJoon2164.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2164.java
rename to src/main/java/baekjoon/class2/BaekJoon2164.java
diff --git a/src/baekjoon/class2/BaekJoon2231.java b/src/main/java/baekjoon/class2/BaekJoon2231.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2231.java
rename to src/main/java/baekjoon/class2/BaekJoon2231.java
diff --git a/src/baekjoon/class2/BaekJoon2609.java b/src/main/java/baekjoon/class2/BaekJoon2609.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2609.java
rename to src/main/java/baekjoon/class2/BaekJoon2609.java
diff --git a/src/baekjoon/class2/BaekJoon2775.java b/src/main/java/baekjoon/class2/BaekJoon2775.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2775.java
rename to src/main/java/baekjoon/class2/BaekJoon2775.java
diff --git a/src/baekjoon/class2/BaekJoon2798.java b/src/main/java/baekjoon/class2/BaekJoon2798.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2798.java
rename to src/main/java/baekjoon/class2/BaekJoon2798.java
diff --git a/src/baekjoon/class2/BaekJoon2839.java b/src/main/java/baekjoon/class2/BaekJoon2839.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2839.java
rename to src/main/java/baekjoon/class2/BaekJoon2839.java
diff --git a/src/baekjoon/class2/BaekJoon2869.java b/src/main/java/baekjoon/class2/BaekJoon2869.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon2869.java
rename to src/main/java/baekjoon/class2/BaekJoon2869.java
diff --git a/src/baekjoon/class2/BaekJoon4949.java b/src/main/java/baekjoon/class2/BaekJoon4949.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon4949.java
rename to src/main/java/baekjoon/class2/BaekJoon4949.java
diff --git a/src/baekjoon/class2/BaekJoon7568.java b/src/main/java/baekjoon/class2/BaekJoon7568.java
similarity index 100%
rename from src/baekjoon/class2/BaekJoon7568.java
rename to src/main/java/baekjoon/class2/BaekJoon7568.java
diff --git a/src/baekjoon/class2/BeakJoon10773.java b/src/main/java/baekjoon/class2/BeakJoon10773.java
similarity index 100%
rename from src/baekjoon/class2/BeakJoon10773.java
rename to src/main/java/baekjoon/class2/BeakJoon10773.java
diff --git a/src/baekjoon/class2/BeakJoon2292.java b/src/main/java/baekjoon/class2/BeakJoon2292.java
similarity index 100%
rename from src/baekjoon/class2/BeakJoon2292.java
rename to src/main/java/baekjoon/class2/BeakJoon2292.java
diff --git a/src/baekjoon/class2/BeakJoon9012.java b/src/main/java/baekjoon/class2/BeakJoon9012.java
similarity index 100%
rename from src/baekjoon/class2/BeakJoon9012.java
rename to src/main/java/baekjoon/class2/BeakJoon9012.java
diff --git a/src/baekjoon/class3/BaekJoon10026.java b/src/main/java/baekjoon/class3/BaekJoon10026.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon10026.java
rename to src/main/java/baekjoon/class3/BaekJoon10026.java
diff --git a/src/baekjoon/class3/BaekJoon1003.java b/src/main/java/baekjoon/class3/BaekJoon1003.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1003.java
rename to src/main/java/baekjoon/class3/BaekJoon1003.java
diff --git a/src/baekjoon/class3/BaekJoon1012.java b/src/main/java/baekjoon/class3/BaekJoon1012.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1012.java
rename to src/main/java/baekjoon/class3/BaekJoon1012.java
diff --git a/src/baekjoon/class3/BaekJoon1074.java b/src/main/java/baekjoon/class3/BaekJoon1074.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1074.java
rename to src/main/java/baekjoon/class3/BaekJoon1074.java
diff --git a/src/baekjoon/class3/BaekJoon11047.java b/src/main/java/baekjoon/class3/BaekJoon11047.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11047.java
rename to src/main/java/baekjoon/class3/BaekJoon11047.java
diff --git a/src/baekjoon/class3/BaekJoon11279.java b/src/main/java/baekjoon/class3/BaekJoon11279.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11279.java
rename to src/main/java/baekjoon/class3/BaekJoon11279.java
diff --git a/src/baekjoon/class3/BaekJoon11399.java b/src/main/java/baekjoon/class3/BaekJoon11399.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11399.java
rename to src/main/java/baekjoon/class3/BaekJoon11399.java
diff --git a/src/baekjoon/class3/BaekJoon11403.java b/src/main/java/baekjoon/class3/BaekJoon11403.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11403.java
rename to src/main/java/baekjoon/class3/BaekJoon11403.java
diff --git a/src/baekjoon/class3/BaekJoon11659.java b/src/main/java/baekjoon/class3/BaekJoon11659.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11659.java
rename to src/main/java/baekjoon/class3/BaekJoon11659.java
diff --git a/src/baekjoon/class3/BaekJoon11723.java b/src/main/java/baekjoon/class3/BaekJoon11723.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11723.java
rename to src/main/java/baekjoon/class3/BaekJoon11723.java
diff --git a/src/baekjoon/class3/BaekJoon11724.java b/src/main/java/baekjoon/class3/BaekJoon11724.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11724.java
rename to src/main/java/baekjoon/class3/BaekJoon11724.java
diff --git a/src/baekjoon/class3/BaekJoon11726.java b/src/main/java/baekjoon/class3/BaekJoon11726.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11726.java
rename to src/main/java/baekjoon/class3/BaekJoon11726.java
diff --git a/src/baekjoon/class3/BaekJoon11727.java b/src/main/java/baekjoon/class3/BaekJoon11727.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon11727.java
rename to src/main/java/baekjoon/class3/BaekJoon11727.java
diff --git a/src/baekjoon/class3/BaekJoon1260.java b/src/main/java/baekjoon/class3/BaekJoon1260.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1260.java
rename to src/main/java/baekjoon/class3/BaekJoon1260.java
diff --git a/src/baekjoon/class3/BaekJoon1389.java b/src/main/java/baekjoon/class3/BaekJoon1389.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1389.java
rename to src/main/java/baekjoon/class3/BaekJoon1389.java
diff --git a/src/baekjoon/class3/BaekJoon1404.java b/src/main/java/baekjoon/class3/BaekJoon1404.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1404.java
rename to src/main/java/baekjoon/class3/BaekJoon1404.java
diff --git a/src/baekjoon/class3/BaekJoon14500.java b/src/main/java/baekjoon/class3/BaekJoon14500.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon14500.java
rename to src/main/java/baekjoon/class3/BaekJoon14500.java
diff --git a/src/baekjoon/class3/BaekJoon1463.java b/src/main/java/baekjoon/class3/BaekJoon1463.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1463.java
rename to src/main/java/baekjoon/class3/BaekJoon1463.java
diff --git a/src/baekjoon/class3/BaekJoon14940.java b/src/main/java/baekjoon/class3/BaekJoon14940.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon14940.java
rename to src/main/java/baekjoon/class3/BaekJoon14940.java
diff --git a/src/baekjoon/class3/BaekJoon1541.java b/src/main/java/baekjoon/class3/BaekJoon1541.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1541.java
rename to src/main/java/baekjoon/class3/BaekJoon1541.java
diff --git a/src/baekjoon/class3/BaekJoon15649.java b/src/main/java/baekjoon/class3/BaekJoon15649.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon15649.java
rename to src/main/java/baekjoon/class3/BaekJoon15649.java
diff --git a/src/baekjoon/class3/BaekJoon1620.java b/src/main/java/baekjoon/class3/BaekJoon1620.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1620.java
rename to src/main/java/baekjoon/class3/BaekJoon1620.java
diff --git a/src/baekjoon/class3/BaekJoon16828.java b/src/main/java/baekjoon/class3/BaekJoon16828.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon16828.java
rename to src/main/java/baekjoon/class3/BaekJoon16828.java
diff --git a/src/baekjoon/class3/BaekJoon1697.java b/src/main/java/baekjoon/class3/BaekJoon1697.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1697.java
rename to src/main/java/baekjoon/class3/BaekJoon1697.java
diff --git a/src/baekjoon/class3/BaekJoon17219.java b/src/main/java/baekjoon/class3/BaekJoon17219.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon17219.java
rename to src/main/java/baekjoon/class3/BaekJoon17219.java
diff --git a/src/baekjoon/class3/BaekJoon17626.java b/src/main/java/baekjoon/class3/BaekJoon17626.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon17626.java
rename to src/main/java/baekjoon/class3/BaekJoon17626.java
diff --git a/src/baekjoon/class3/BaekJoon1764.java b/src/main/java/baekjoon/class3/BaekJoon1764.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1764.java
rename to src/main/java/baekjoon/class3/BaekJoon1764.java
diff --git a/src/baekjoon/class3/BaekJoon18870.java b/src/main/java/baekjoon/class3/BaekJoon18870.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon18870.java
rename to src/main/java/baekjoon/class3/BaekJoon18870.java
diff --git a/src/baekjoon/class3/BaekJoon1927.java b/src/main/java/baekjoon/class3/BaekJoon1927.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1927.java
rename to src/main/java/baekjoon/class3/BaekJoon1927.java
diff --git a/src/baekjoon/class3/BaekJoon1931.java b/src/main/java/baekjoon/class3/BaekJoon1931.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon1931.java
rename to src/main/java/baekjoon/class3/BaekJoon1931.java
diff --git a/src/baekjoon/class3/BaekJoon20529.java b/src/main/java/baekjoon/class3/BaekJoon20529.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon20529.java
rename to src/main/java/baekjoon/class3/BaekJoon20529.java
diff --git a/src/baekjoon/class3/BaekJoon21736.java b/src/main/java/baekjoon/class3/BaekJoon21736.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon21736.java
rename to src/main/java/baekjoon/class3/BaekJoon21736.java
diff --git a/src/baekjoon/class3/BaekJoon2178.java b/src/main/java/baekjoon/class3/BaekJoon2178.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon2178.java
rename to src/main/java/baekjoon/class3/BaekJoon2178.java
diff --git a/src/baekjoon/class3/BaekJoon2579.java b/src/main/java/baekjoon/class3/BaekJoon2579.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon2579.java
rename to src/main/java/baekjoon/class3/BaekJoon2579.java
diff --git a/src/baekjoon/class3/BaekJoon2606.java b/src/main/java/baekjoon/class3/BaekJoon2606.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon2606.java
rename to src/main/java/baekjoon/class3/BaekJoon2606.java
diff --git a/src/baekjoon/class3/BaekJoon2630.java b/src/main/java/baekjoon/class3/BaekJoon2630.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon2630.java
rename to src/main/java/baekjoon/class3/BaekJoon2630.java
diff --git a/src/baekjoon/class3/BaekJoon2805.java b/src/main/java/baekjoon/class3/BaekJoon2805.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon2805.java
rename to src/main/java/baekjoon/class3/BaekJoon2805.java
diff --git a/src/baekjoon/class3/BaekJoon30804.java b/src/main/java/baekjoon/class3/BaekJoon30804.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon30804.java
rename to src/main/java/baekjoon/class3/BaekJoon30804.java
diff --git a/src/baekjoon/class3/BaekJoon5430.java b/src/main/java/baekjoon/class3/BaekJoon5430.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon5430.java
rename to src/main/java/baekjoon/class3/BaekJoon5430.java
diff --git a/src/baekjoon/class3/BaekJoon5525.java b/src/main/java/baekjoon/class3/BaekJoon5525.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon5525.java
rename to src/main/java/baekjoon/class3/BaekJoon5525.java
diff --git a/src/baekjoon/class3/BaekJoon6064.java b/src/main/java/baekjoon/class3/BaekJoon6064.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon6064.java
rename to src/main/java/baekjoon/class3/BaekJoon6064.java
diff --git a/src/baekjoon/class3/BaekJoon7569.java b/src/main/java/baekjoon/class3/BaekJoon7569.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon7569.java
rename to src/main/java/baekjoon/class3/BaekJoon7569.java
diff --git a/src/baekjoon/class3/BaekJoon7576.java b/src/main/java/baekjoon/class3/BaekJoon7576.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon7576.java
rename to src/main/java/baekjoon/class3/BaekJoon7576.java
diff --git a/src/baekjoon/class3/BaekJoon7662.java b/src/main/java/baekjoon/class3/BaekJoon7662.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon7662.java
rename to src/main/java/baekjoon/class3/BaekJoon7662.java
diff --git a/src/baekjoon/class3/BaekJoon9005.java b/src/main/java/baekjoon/class3/BaekJoon9005.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon9005.java
rename to src/main/java/baekjoon/class3/BaekJoon9005.java
diff --git a/src/baekjoon/class3/BaekJoon9019.java b/src/main/java/baekjoon/class3/BaekJoon9019.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon9019.java
rename to src/main/java/baekjoon/class3/BaekJoon9019.java
diff --git a/src/baekjoon/class3/BaekJoon9375.java b/src/main/java/baekjoon/class3/BaekJoon9375.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon9375.java
rename to src/main/java/baekjoon/class3/BaekJoon9375.java
diff --git a/src/baekjoon/class3/BaekJoon9461.java b/src/main/java/baekjoon/class3/BaekJoon9461.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoon9461.java
rename to src/main/java/baekjoon/class3/BaekJoon9461.java
diff --git a/src/baekjoon/class3/BaekJoont2630Two.java b/src/main/java/baekjoon/class3/BaekJoont2630Two.java
similarity index 100%
rename from src/baekjoon/class3/BaekJoont2630Two.java
rename to src/main/java/baekjoon/class3/BaekJoont2630Two.java
diff --git a/src/baekjoon/class3/BeakJoon11286.java b/src/main/java/baekjoon/class3/BeakJoon11286.java
similarity index 100%
rename from src/baekjoon/class3/BeakJoon11286.java
rename to src/main/java/baekjoon/class3/BeakJoon11286.java
diff --git a/src/baekjoon/class4/BaekJoon1043.java b/src/main/java/baekjoon/class4/BaekJoon1043.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon1043.java
rename to src/main/java/baekjoon/class4/BaekJoon1043.java
diff --git a/src/baekjoon/class4/BaekJoon11053.java b/src/main/java/baekjoon/class4/BaekJoon11053.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon11053.java
rename to src/main/java/baekjoon/class4/BaekJoon11053.java
diff --git a/src/baekjoon/class4/BaekJoon11404.java b/src/main/java/baekjoon/class4/BaekJoon11404.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon11404.java
rename to src/main/java/baekjoon/class4/BaekJoon11404.java
diff --git a/src/baekjoon/class4/BaekJoon11444.java b/src/main/java/baekjoon/class4/BaekJoon11444.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon11444.java
rename to src/main/java/baekjoon/class4/BaekJoon11444.java
diff --git a/src/baekjoon/class4/BaekJoon1149.java b/src/main/java/baekjoon/class4/BaekJoon1149.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon1149.java
rename to src/main/java/baekjoon/class4/BaekJoon1149.java
diff --git a/src/baekjoon/class4/BaekJoon11660.java b/src/main/java/baekjoon/class4/BaekJoon11660.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon11660.java
rename to src/main/java/baekjoon/class4/BaekJoon11660.java
diff --git a/src/baekjoon/class4/BaekJoon11725.java b/src/main/java/baekjoon/class4/BaekJoon11725.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon11725.java
rename to src/main/java/baekjoon/class4/BaekJoon11725.java
diff --git a/src/baekjoon/class4/BaekJoon1238.java b/src/main/java/baekjoon/class4/BaekJoon1238.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon1238.java
rename to src/main/java/baekjoon/class4/BaekJoon1238.java
diff --git a/src/baekjoon/class4/BaekJoon12865.java b/src/main/java/baekjoon/class4/BaekJoon12865.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon12865.java
rename to src/main/java/baekjoon/class4/BaekJoon12865.java
diff --git a/src/baekjoon/class4/BaekJoon13549.java b/src/main/java/baekjoon/class4/BaekJoon13549.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon13549.java
rename to src/main/java/baekjoon/class4/BaekJoon13549.java
diff --git a/src/baekjoon/class4/BaekJoon15650.java b/src/main/java/baekjoon/class4/BaekJoon15650.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon15650.java
rename to src/main/java/baekjoon/class4/BaekJoon15650.java
diff --git a/src/baekjoon/class4/BaekJoon15652.java b/src/main/java/baekjoon/class4/BaekJoon15652.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon15652.java
rename to src/main/java/baekjoon/class4/BaekJoon15652.java
diff --git a/src/baekjoon/class4/BaekJoon15654.java b/src/main/java/baekjoon/class4/BaekJoon15654.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon15654.java
rename to src/main/java/baekjoon/class4/BaekJoon15654.java
diff --git a/src/baekjoon/class4/BaekJoon15663.java b/src/main/java/baekjoon/class4/BaekJoon15663.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon15663.java
rename to src/main/java/baekjoon/class4/BaekJoon15663.java
diff --git a/src/baekjoon/class4/BaekJoon15666.java b/src/main/java/baekjoon/class4/BaekJoon15666.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon15666.java
rename to src/main/java/baekjoon/class4/BaekJoon15666.java
diff --git a/src/baekjoon/class4/BaekJoon16953.java b/src/main/java/baekjoon/class4/BaekJoon16953.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon16953.java
rename to src/main/java/baekjoon/class4/BaekJoon16953.java
diff --git a/src/baekjoon/class4/BaekJoon1753.java b/src/main/java/baekjoon/class4/BaekJoon1753.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon1753.java
rename to src/main/java/baekjoon/class4/BaekJoon1753.java
diff --git a/src/baekjoon/class4/BaekJoon1916.java b/src/main/java/baekjoon/class4/BaekJoon1916.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon1916.java
rename to src/main/java/baekjoon/class4/BaekJoon1916.java
diff --git a/src/baekjoon/class4/BaekJoon1932.java b/src/main/java/baekjoon/class4/BaekJoon1932.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon1932.java
rename to src/main/java/baekjoon/class4/BaekJoon1932.java
diff --git a/src/baekjoon/class4/BaekJoon1991.java b/src/main/java/baekjoon/class4/BaekJoon1991.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon1991.java
rename to src/main/java/baekjoon/class4/BaekJoon1991.java
diff --git a/src/baekjoon/class4/BaekJoon2096.java b/src/main/java/baekjoon/class4/BaekJoon2096.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon2096.java
rename to src/main/java/baekjoon/class4/BaekJoon2096.java
diff --git a/src/baekjoon/class4/BaekJoon2206.java b/src/main/java/baekjoon/class4/BaekJoon2206.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon2206.java
rename to src/main/java/baekjoon/class4/BaekJoon2206.java
diff --git a/src/baekjoon/class4/BaekJoon9251.java b/src/main/java/baekjoon/class4/BaekJoon9251.java
similarity index 100%
rename from src/baekjoon/class4/BaekJoon9251.java
rename to src/main/java/baekjoon/class4/BaekJoon9251.java
diff --git a/src/baekjoon/gold/BaekJoon14502.java b/src/main/java/baekjoon/gold/BaekJoon14502.java
similarity index 100%
rename from src/baekjoon/gold/BaekJoon14502.java
rename to src/main/java/baekjoon/gold/BaekJoon14502.java
diff --git a/src/baekjoon/gold/BaekJoon9663.java b/src/main/java/baekjoon/gold/BaekJoon9663.java
similarity index 100%
rename from src/baekjoon/gold/BaekJoon9663.java
rename to src/main/java/baekjoon/gold/BaekJoon9663.java
diff --git a/src/baekjoon/seed/BigIntegerOperatior.java b/src/main/java/baekjoon/seed/BigIntegerOperatior.java
similarity index 100%
rename from src/baekjoon/seed/BigIntegerOperatior.java
rename to src/main/java/baekjoon/seed/BigIntegerOperatior.java
diff --git a/src/baekjoon/seed/Rich.java b/src/main/java/baekjoon/seed/Rich.java
similarity index 100%
rename from src/baekjoon/seed/Rich.java
rename to src/main/java/baekjoon/seed/Rich.java
diff --git a/src/baekjoon/silver/BaekJonn19709.java b/src/main/java/baekjoon/silver/BaekJonn19709.java
similarity index 100%
rename from src/baekjoon/silver/BaekJonn19709.java
rename to src/main/java/baekjoon/silver/BaekJonn19709.java
diff --git a/src/baekjoon/silver/BaekJoon1010.java b/src/main/java/baekjoon/silver/BaekJoon1010.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon1010.java
rename to src/main/java/baekjoon/silver/BaekJoon1010.java
diff --git a/src/baekjoon/silver/BaekJoon1094.java b/src/main/java/baekjoon/silver/BaekJoon1094.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon1094.java
rename to src/main/java/baekjoon/silver/BaekJoon1094.java
diff --git a/src/baekjoon/silver/BaekJoon11123.java b/src/main/java/baekjoon/silver/BaekJoon11123.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon11123.java
rename to src/main/java/baekjoon/silver/BaekJoon11123.java
diff --git a/src/baekjoon/silver/BaekJoon11675.java b/src/main/java/baekjoon/silver/BaekJoon11675.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon11675.java
rename to src/main/java/baekjoon/silver/BaekJoon11675.java
diff --git a/src/baekjoon/silver/BaekJoon1193.java b/src/main/java/baekjoon/silver/BaekJoon1193.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon1193.java
rename to src/main/java/baekjoon/silver/BaekJoon1193.java
diff --git a/src/baekjoon/silver/BaekJoon1268.java b/src/main/java/baekjoon/silver/BaekJoon1268.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon1268.java
rename to src/main/java/baekjoon/silver/BaekJoon1268.java
diff --git a/src/baekjoon/silver/BaekJoon1312.java b/src/main/java/baekjoon/silver/BaekJoon1312.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon1312.java
rename to src/main/java/baekjoon/silver/BaekJoon1312.java
diff --git a/src/baekjoon/silver/BaekJoon13172.java b/src/main/java/baekjoon/silver/BaekJoon13172.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon13172.java
rename to src/main/java/baekjoon/silver/BaekJoon13172.java
diff --git a/src/baekjoon/silver/BaekJoon13414.java b/src/main/java/baekjoon/silver/BaekJoon13414.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon13414.java
rename to src/main/java/baekjoon/silver/BaekJoon13414.java
diff --git a/src/baekjoon/silver/BaekJoon13909.java b/src/main/java/baekjoon/silver/BaekJoon13909.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon13909.java
rename to src/main/java/baekjoon/silver/BaekJoon13909.java
diff --git a/src/baekjoon/silver/BaekJoon1475.java b/src/main/java/baekjoon/silver/BaekJoon1475.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon1475.java
rename to src/main/java/baekjoon/silver/BaekJoon1475.java
diff --git a/src/baekjoon/silver/BaekJoon15779.java b/src/main/java/baekjoon/silver/BaekJoon15779.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon15779.java
rename to src/main/java/baekjoon/silver/BaekJoon15779.java
diff --git a/src/baekjoon/silver/BaekJoon16208.java b/src/main/java/baekjoon/silver/BaekJoon16208.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon16208.java
rename to src/main/java/baekjoon/silver/BaekJoon16208.java
diff --git a/src/baekjoon/silver/BaekJoon1629.java b/src/main/java/baekjoon/silver/BaekJoon1629.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon1629.java
rename to src/main/java/baekjoon/silver/BaekJoon1629.java
diff --git a/src/baekjoon/silver/BaekJoon17127.java b/src/main/java/baekjoon/silver/BaekJoon17127.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon17127.java
rename to src/main/java/baekjoon/silver/BaekJoon17127.java
diff --git a/src/baekjoon/silver/BaekJoon24173.java b/src/main/java/baekjoon/silver/BaekJoon24173.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon24173.java
rename to src/main/java/baekjoon/silver/BaekJoon24173.java
diff --git a/src/baekjoon/silver/BaekJoon2667.java b/src/main/java/baekjoon/silver/BaekJoon2667.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon2667.java
rename to src/main/java/baekjoon/silver/BaekJoon2667.java
diff --git a/src/baekjoon/silver/BaekJoon26876.java b/src/main/java/baekjoon/silver/BaekJoon26876.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon26876.java
rename to src/main/java/baekjoon/silver/BaekJoon26876.java
diff --git a/src/baekjoon/silver/BaekJoon8975.java b/src/main/java/baekjoon/silver/BaekJoon8975.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon8975.java
rename to src/main/java/baekjoon/silver/BaekJoon8975.java
diff --git a/src/baekjoon/silver/BaekJoon9372.java b/src/main/java/baekjoon/silver/BaekJoon9372.java
similarity index 100%
rename from src/baekjoon/silver/BaekJoon9372.java
rename to src/main/java/baekjoon/silver/BaekJoon9372.java
diff --git a/src/basic/baaarking/sum100.java b/src/main/java/basic/baaarking/sum100.java
similarity index 100%
rename from src/basic/baaarking/sum100.java
rename to src/main/java/basic/baaarking/sum100.java
diff --git a/src/main/java/basic/datastructure/Base.java b/src/main/java/basic/datastructure/Base.java
new file mode 100644
index 0000000..7ce2928
--- /dev/null
+++ b/src/main/java/basic/datastructure/Base.java
@@ -0,0 +1,22 @@
+package basic.datastructure;
+
+//모든 자료 구조에 기본적으로 들어가야할 메소드
+public interface Base<T> {
+
+    /**
+     * 자료 구조에 들어있는 데이터의 수
+     */
+    int getSize();
+
+
+    /**
+     * 자료 구조가 비었는지 확인
+     */
+    boolean isEmpty();
+
+    /**
+     * 자료 구조 속 들어있는 데이터 초기화
+     */
+    void clear();
+
+}
diff --git a/src/main/java/basic/datastructure/list/AbstractList.java b/src/main/java/basic/datastructure/list/AbstractList.java
new file mode 100644
index 0000000..c1e1b83
--- /dev/null
+++ b/src/main/java/basic/datastructure/list/AbstractList.java
@@ -0,0 +1,10 @@
+package basic.datastructure.list;
+
+public abstract class AbstractList<T> implements List<T>{
+    protected int size = 0;
+
+    @Override
+    public int getSize(){
+        return size;
+    }
+}
diff --git a/src/main/java/basic/datastructure/list/ArrayList.java b/src/main/java/basic/datastructure/list/ArrayList.java
new file mode 100644
index 0000000..fc70fc9
--- /dev/null
+++ b/src/main/java/basic/datastructure/list/ArrayList.java
@@ -0,0 +1,218 @@
+package basic.datastructure.list;
+
+public class ArrayList<T> extends AbstractList<T> implements List<T> {
+    private  static final int DEFAULT_SIZE = 10;
+
+    private T[] array;
+
+    @SuppressWarnings("unchecked")
+    public ArrayList(){
+        array = (T[]) new Object[DEFAULT_SIZE];
+    }
+
+    @SuppressWarnings("unchecked")
+    public ArrayList(int size){
+        array = (T[]) new Object[size];
+    }
+
+    @SuppressWarnings("unchecked")
+    public ArrayList(List<T> array){
+        this.array = (T[]) new Object[array.getSize()];
+
+        for(int i = 0 ; i<array.getSize();i++){
+            this.array[i] = array.get(i);
+        }
+
+        this.size = array.getSize();
+    }
+
+    @Override
+    public T get(int index) {
+        checkOutBoundsIndex(index);
+
+        return array[index];
+    }
+
+    @Override
+    public T update(int index, T element) {
+        checkOutBoundsIndex(index);
+
+        checkNullElement(element);
+
+        T old = array[index];
+        
+        //특정 인덱스의 값을 변경
+        array[index] = element;
+        
+        return old;
+    }
+
+    @Override
+    public void delete(int index) {
+        checkOutBoundsIndex(index);
+
+        //특정 인덱스의 값을 삭제하고 앞으로 땡김.
+        for(int i = index;i<size-1;i++){
+            array[i] = array[i+1];
+        }
+
+        array[size - 1] = null;
+        size--;
+    }
+
+    @Override
+    public int removeAll(T element) {
+        int count=0;
+        checkNullElement(element);
+        for(int i = 0 ; i < size;i++){
+            if(array[i].equals(element)){
+                count++;
+                delete(i);
+                i--;
+            }
+        }
+
+        return count;
+    }
+
+    @Override
+    public void remove(T element) {
+        checkNullElement(element);
+        for(int i = 0 ; i < size;i++){
+            if(array[i].equals(element)){
+                delete(i);
+                break;
+            }
+        }
+    }
+
+    @Override
+    public boolean contains(T element) {
+        checkNullElement(element);
+
+        for(int i =0 ; i<size;i++){
+            if(array[i].equals(element)) return true;
+        }
+
+        return false;
+    }
+
+    @Override
+    public int findFirstIndex(T element) {
+        checkNullElement(element);
+
+        for(int i =0 ; i<size;i++){
+            if(array[i].equals(element)) return i;
+        }
+        return -1;
+    }
+
+    @Override
+    public int findLastIndex(T element) {
+        checkNullElement(element);
+        for(int i =size-1 ; i>=0;i--){
+            if(array[i].equals(element)) return i;
+        }
+        return -1;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void add(T element) {
+        checkNullElement(element);
+        if(this.size==array.length){
+            T[] temp = (T[]) new Object[(this.size + this.size>>1)];
+
+            System.arraycopy(array, 0, temp, 0, size);
+            array = temp;
+        }
+
+        array[size++] = element;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void insert(T element, int index) {
+        checkOutBoundsInsertIndex(index);
+
+        checkNullElement(element);
+
+        if (size == array.length) {
+            T[] temp = (T[]) new Object[size + (size >> 1)];
+
+            if (index >= 0) System.arraycopy(array, 0, temp, 0, index);
+
+            if (size - index >= 0) System.arraycopy(array, index, temp, index + 1, size - index);
+
+            array = temp;
+
+        } else {
+            for (int i = size - 1; i >= index; i--) {
+                array[i + 1] = array[i];
+            }
+        }
+
+        array[index] = element;
+        size++;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void addAll(List<T> elements) {
+
+        int tempSize = elements.getSize() + getSize();
+        if(array.length < tempSize){
+            T[] temp = (T[]) new Object[tempSize + tempSize>>1];
+
+            System.arraycopy(array, 0, temp, 0, size);
+
+            for(int i = 0 ; i<elements.getSize();i++){
+                temp[size+i] = elements.get(i);
+            }
+
+
+            array = temp;
+        }else{
+            for(int i = 0 ; i<elements.getSize();i++){
+                array[size+i] = elements.get(i);
+            }
+        }
+        size = tempSize;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return size==0;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void clear() {
+        array = (T[]) new Object[DEFAULT_SIZE];
+        size =0;
+    }
+
+    private void checkOutBoundsIndex(int index){
+        String errorMessage =  String.format(
+                "배열의 size는 %d 입니다. 요청하신 index %d는 배열의 범위를 벗어났습니다.",
+                size, index
+        );
+
+        if(index < 0 || index >= size) throw new ArrayIndexOutOfBoundsException(errorMessage);
+    }
+
+    private void checkOutBoundsInsertIndex(int index){
+        String errorMessage =  String.format(
+                "배열의 size는 %d 입니다. 요청하신 index %d는 배열의 범위를 벗어났습니다.",
+                size, index
+        );
+
+        if(index < 0 || index > size) throw new ArrayIndexOutOfBoundsException(errorMessage);
+    }
+
+    private void checkNullElement(T element){
+        if(element==null){
+            throw new IllegalArgumentException("null은 입력할 수 없습니다.");
+        }
+    }
+}
diff --git a/src/main/java/basic/datastructure/list/List.java b/src/main/java/basic/datastructure/list/List.java
new file mode 100644
index 0000000..301cded
--- /dev/null
+++ b/src/main/java/basic/datastructure/list/List.java
@@ -0,0 +1,65 @@
+package basic.datastructure.list;
+
+import basic.datastructure.Base;
+
+public interface List<T> extends Base<T> {
+
+    /**
+     * 특정 인덱스의 값을 반환
+     * */
+    T get(int index);
+
+    /**
+     * 특정 인덱스의 값 수정.
+     */
+    T update(int index, T element);
+
+
+    /**
+     * 특정 인덱스의 값을 삭제
+     */
+    void delete(int index);
+
+    /**
+     * 특정 element를 전체 삭제
+     */
+    int removeAll(T element);
+
+    /**
+     * 특정 element 중 첫번째 삭제
+     */
+    void remove(T element);
+
+    /**
+     * 특정 값이 존재하는 지 확인
+     */
+    boolean contains(T element);
+
+    /**
+     * 특정 값을 앞에서부터 탐색하여 몇번째 인덱스에 있는지 확인
+     * 없으면 -1 반환
+     */
+    int findFirstIndex(T element);
+
+    /**
+     * 특정 값을 뒤에서부터 탐색하여 몇번째 인덱스에 있는지 확인
+     * 없으면 -1 반환
+     */
+    int findLastIndex(T element);
+
+    /**
+     * 특정 값을 맨마지막에 추가
+     */
+    void add(T element);
+
+    /**
+     * 특정 값을 중간에 추가
+     */
+    void insert(T element, int index);
+
+    /**
+     * 리스트 간의 병합.
+     * 기존 list 뒤에 병합.
+     */
+    void addAll(List<T> elements);
+}
diff --git a/src/basic/practice/problem3_1.java b/src/main/java/basic/practice/problem3_1.java
similarity index 100%
rename from src/basic/practice/problem3_1.java
rename to src/main/java/basic/practice/problem3_1.java
diff --git a/src/basic/sort/ArrayGenerator.java b/src/main/java/basic/sort/ArrayGenerator.java
similarity index 100%
rename from src/basic/sort/ArrayGenerator.java
rename to src/main/java/basic/sort/ArrayGenerator.java
diff --git a/src/basic/sort/Sort.java b/src/main/java/basic/sort/Sort.java
similarity index 100%
rename from src/basic/sort/Sort.java
rename to src/main/java/basic/sort/Sort.java
diff --git a/src/basic/sort/SortMain.java b/src/main/java/basic/sort/SortMain.java
similarity index 100%
rename from src/basic/sort/SortMain.java
rename to src/main/java/basic/sort/SortMain.java
diff --git a/src/basic/sort/impl/Bubble.java b/src/main/java/basic/sort/impl/Bubble.java
similarity index 100%
rename from src/basic/sort/impl/Bubble.java
rename to src/main/java/basic/sort/impl/Bubble.java
diff --git a/src/basic/sort/impl/Insert.java b/src/main/java/basic/sort/impl/Insert.java
similarity index 100%
rename from src/basic/sort/impl/Insert.java
rename to src/main/java/basic/sort/impl/Insert.java
diff --git a/src/basic/sort/impl/Merge.java b/src/main/java/basic/sort/impl/Merge.java
similarity index 100%
rename from src/basic/sort/impl/Merge.java
rename to src/main/java/basic/sort/impl/Merge.java
diff --git a/src/basic/sort/impl/Quick.java b/src/main/java/basic/sort/impl/Quick.java
similarity index 100%
rename from src/basic/sort/impl/Quick.java
rename to src/main/java/basic/sort/impl/Quick.java
diff --git a/src/basic/sort/impl/Select.java b/src/main/java/basic/sort/impl/Select.java
similarity index 100%
rename from src/basic/sort/impl/Select.java
rename to src/main/java/basic/sort/impl/Select.java
diff --git a/src/basic/star/Star1.java b/src/main/java/basic/star/Star1.java
similarity index 100%
rename from src/basic/star/Star1.java
rename to src/main/java/basic/star/Star1.java
diff --git a/src/basic/star/Star2.java b/src/main/java/basic/star/Star2.java
similarity index 100%
rename from src/basic/star/Star2.java
rename to src/main/java/basic/star/Star2.java
diff --git a/src/basic/star/Star3.java b/src/main/java/basic/star/Star3.java
similarity index 100%
rename from src/basic/star/Star3.java
rename to src/main/java/basic/star/Star3.java
diff --git a/src/basic/star/Star4.java b/src/main/java/basic/star/Star4.java
similarity index 100%
rename from src/basic/star/Star4.java
rename to src/main/java/basic/star/Star4.java
diff --git a/src/basic/star/Star5.java b/src/main/java/basic/star/Star5.java
similarity index 100%
rename from src/basic/star/Star5.java
rename to src/main/java/basic/star/Star5.java
diff --git a/src/basic/star/Star5_2.java b/src/main/java/basic/star/Star5_2.java
similarity index 100%
rename from src/basic/star/Star5_2.java
rename to src/main/java/basic/star/Star5_2.java
diff --git a/src/basic/star/Star5_3.java b/src/main/java/basic/star/Star5_3.java
similarity index 100%
rename from src/basic/star/Star5_3.java
rename to src/main/java/basic/star/Star5_3.java
diff --git a/src/basic/star/Star5_3_2.java b/src/main/java/basic/star/Star5_3_2.java
similarity index 100%
rename from src/basic/star/Star5_3_2.java
rename to src/main/java/basic/star/Star5_3_2.java
diff --git a/src/basic/star/Star6.java b/src/main/java/basic/star/Star6.java
similarity index 100%
rename from src/basic/star/Star6.java
rename to src/main/java/basic/star/Star6.java
diff --git a/src/basic/star/Star7.java b/src/main/java/basic/star/Star7.java
similarity index 100%
rename from src/basic/star/Star7.java
rename to src/main/java/basic/star/Star7.java
diff --git a/src/basic/star/Star8.java b/src/main/java/basic/star/Star8.java
similarity index 100%
rename from src/basic/star/Star8.java
rename to src/main/java/basic/star/Star8.java
diff --git a/src/basic/star/Star9.java b/src/main/java/basic/star/Star9.java
similarity index 100%
rename from src/basic/star/Star9.java
rename to src/main/java/basic/star/Star9.java
diff --git a/src/basic/star/StarInterface.java b/src/main/java/basic/star/StarInterface.java
similarity index 100%
rename from src/basic/star/StarInterface.java
rename to src/main/java/basic/star/StarInterface.java
diff --git a/src/basic/star/StarMain.java b/src/main/java/basic/star/StarMain.java
similarity index 100%
rename from src/basic/star/StarMain.java
rename to src/main/java/basic/star/StarMain.java
diff --git a/src/basic/star/StarUbin5_2.java b/src/main/java/basic/star/StarUbin5_2.java
similarity index 100%
rename from src/basic/star/StarUbin5_2.java
rename to src/main/java/basic/star/StarUbin5_2.java
diff --git a/src/basic/star/StartUbin5_2_2.java b/src/main/java/basic/star/StartUbin5_2_2.java
similarity index 100%
rename from src/basic/star/StartUbin5_2_2.java
rename to src/main/java/basic/star/StartUbin5_2_2.java
diff --git a/src/git/mergeTest/ShareModify.java b/src/main/java/git/mergeTest/ShareModify.java
similarity index 100%
rename from src/git/mergeTest/ShareModify.java
rename to src/main/java/git/mergeTest/ShareModify.java
diff --git a/src/git/mergeTest/merge1modify.java b/src/main/java/git/mergeTest/merge1modify.java
similarity index 100%
rename from src/git/mergeTest/merge1modify.java
rename to src/main/java/git/mergeTest/merge1modify.java
diff --git a/src/git/mergeTest/merge2modify.java b/src/main/java/git/mergeTest/merge2modify.java
similarity index 100%
rename from src/git/mergeTest/merge2modify.java
rename to src/main/java/git/mergeTest/merge2modify.java