题目

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner sc = new Scanner(System.in);String str = sc.nextLine();int res = 0;for(int i=0;i<str.length();i++) {char c = str.charAt(i);if(c!=' ' && c!='\n') {res++;}}System.out.println(res);}
}