题解 | #简写单词#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            String s = in.next();
            String[] ss = s.split(" ");
            StringBuilder sb = new StringBuilder();
            for(int i = 0;i<ss.length;i++){
                char a = ss[i].charAt(0);
                if(a>=97){
                    char b = (char)(a - 32);
                    sb.append(b);
                }else{
                    sb.append(a);
                }
            }
            System.out.print(sb);
        }
    }
}