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

using namespace std;

typedef int ll;

ll biggest_stadium(ll n, vector<vector<ll>> f) {
	ll x = -1, y = -1;
	for (ll i = 0; i < n; i++) {
		for (ll j = 0; j < n; j++) {
			if (f[i][j] == 1) {
				x = i;
				y = j;
			}
		}
	}
	if (x == -1) {
		return n * n;
	}
	if (n - x - 1 > x) {
		x = n - x - 1;
	}
	if (n - y - 1 > y) {
		y = n - y - 1;
	}
	return n * y + n * x - x * y;
}

#ifdef LOCAL
int main()
{
    int N;
    assert(1 == scanf("%d", &N));
    std::vector<std::vector<int>> F(N, std::vector<int>(N));
    for (int i = 0; i < N; i++)
    {
        for (int j = 0; j < N; j++)
        {
            assert(1 == scanf("%d", &F[i][j]));
        }
    }
    fclose(stdin);

    int res = biggest_stadium(N, F);

    printf("%d\n", res);
    fclose(stdout);
    return 0;
}
#endif