题解 | #小乐乐算多少人被请家长#

#include <iostream>
using namespace std;
struct node {
    int c, m, e;
} a[1000];
int main() {
    int n;
    cin >> n;
    for (int i = 1; i <=n; i++) {
        cin >> a[i].c >> a[i].m >> a[i].e;
    }
    int res=0,sum=0;
    for(int i=1;i<=n;i++){
        res=(a[i].c+a[i].m+a[i].e)/3;
        if(res<60){
            sum++;
        }
    }
    cout<<sum;
}
// 64 位输出请用 printf("%lld")