解法：

#include<iostream>
#include<vector>
using namespace std;
int arr[100][100];
int main() {
	int n, max = 0;
	cin >> n;
	vector<int> sum(n, 0);
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			cin >> arr[i][j];
			sum[i] += arr[i][j];
		}
		if (max < sum[i]) max = sum[i];
	}
	cout << max << endl;
	for (int i = 0; i < n; i++) {
		if (sum[i] == max)
			cout << i;
	}
	return 0;
}