import java.util.Stack;
//P232leetcode
public class MyQueue {
    Stack<Integer>stack1;
    Stack<Integer>stack2;
    public MyQueue(){
        stack1=new Stack<>();
        stack2=new Stack<>();
    }
    public void push(int x){
      
        while(!stack1.isEmpty()){
          stack2.push(stack1.pop());
      }
      stack1.push(x);
      while(!stack2.isEmpty()){
          stack1.push(stack2.pop());
      }
    }
    public int pop(){
      return stack1.pop();
    }
    public int peek(){
      return stack1.peek();
    }
    public boolean empty(){
      return stack1.isEmpty();
    }
}