#include "soccer.h"
#include<bits/stdc++.h>

using namespace std;

typedef int ll;

ll biggest_stadium(ll n, vector<vector<ll>> f) {
	ll col = 0;
	for (ll i = 0; i < n; i++) {
		bool iso = false;
		bool isop = false;
		for (ll j = 0; j < n; j++) {
			if (f[i][j] == 0) {
				if (isop) {
					return n * n;
				}
				iso = true;
			} else {
				col++;
				if (iso) {
					isop = true;
					iso = false;
				}
			}
		}
	}
	for (ll i = 0; i < n; i++) {
		bool iso = false;
		bool isop = false;
		for (ll j = 0; j < n; j++) {
			if (f[j][i] == 0) {
				if (isop) {
					return n * n;
				}
				iso = true;
			} else {
				if (iso) {
					isop = true;
					iso = false;
				}
			}
		}
	}
	return col;
}