package backjoon;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.util.StringTokenizer;

// https://www.acmicpc.net/problem/1152

// 단어의 개수

public class _1152 {

public static void main(String[] args) throws IOException {

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

// sol1

// memory 27208 runtime 200

String[] words = br.readLine().split(" ");

int cnt = words.length;

for(String s : words){

if(s.length() == 0){

cnt--;

}

}

System.out.println(cnt);

// sol2

// memory 20376 runtime 180

// StringTokenizer st = new StringTokenizer(br.readLine(), " ");

// System.out.println(st.countTokens());

}

}

/*

input

The Curious Case of Benjamin Button

output

6

input

Mazatneunde Wae Teullyeoyo

output

3

*/