题解 | #小乐乐算多少人被请家长#

#include <stdio.h>

int main() {
    int n = 0;
    int cnt = 0;
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        int avg = 0;
        int grd [n][3];
        for (int j = 0; j < 3; j++) {
            scanf("%d", &grd[i][j]);
        }
        avg = (grd[i][0] + grd[i][1] + grd[i][2]) / 3;
        if (avg < 60) {
            cnt++;
        }
    }
    printf("%d\n", cnt);
    return 0;
}