测试数据是不是有问题

#include <iostream>
using namespace std;
int main() {
    int n, score = -1, ans = 0;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        int sum = 0, x;
        for (int j = 0; j < n; j++) {
            cin >> x;
            if (x >= 3)
                sum++;
        }
        if (sum > score) {
            score = sum;
            ans = i;
        }
    }
    cout << ans << endl;
    return 0;
}