题解 | 小乐乐算多少人被请家长

#include <iostream>
using namespace std;
int main() {
    int sum = 0;
    int n, a, b, c; cin >> n;
    for(int i = 1; i <= n; i ++){
        cin >> a >> b >> c;
        if(a + b + c < 180) sum ++;
    }
    cout << sum;
}