baekjoon 1152번

import java.util.Scanner;

public class Main1152 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String str = sc.nextLine().trim();

        String[] arr;

        arr = str.split(" ");

        if(str.isEmpty()){
            System.out.println("0");
        }else {
            System.out.println((arr.length));
        }
    }
}