题解 | #小乐乐算多少人被请家长#

知识点：

循环控制：循环控制

#include <iostream>
#include <array>
using namespace std;

int main() {
    array<int, 3> score;
    int n;
    double average;
    int count = 0;

    cin >> n;

    for (int i = 0; i < n; i++) {
        cin >> score[0] >> score[1] >> score[2];
        average = (score[0] + score[1] + score[2]) / 3.0;

        if (average < 60.0) {
            count++;
        }
    }

    cout << count;

    return 0;
}