题解 | 牛牛是否被叫家长

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 sc = new Scanner(System.in);
        int A = sc.nextInt(),B = sc.nextInt(),C = sc.nextInt();
        int AVG = (A + B +C) / 3;
        if(AVG >= 60){
            System.out.print("NO");
        }else{
            System.out.print("YES");
        }
    }
}