题解 | 小乐乐算多少人被请家长

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 n = sc.nextInt();
        int sum = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();
            int c = sc.nextInt();
            int f = (a+b+c)/3;
            if (f< 60) {
                sum++;
            }
        }
        System.out.println(sum);
    }
}