#include <iostream>
using namespace std;
const int N = 110;
int a[N][N];

int main() {
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= n; j++)
            cin >> a[i][j];
    //首行累加和
    int s = 0;
    for (int i = 1; i <= n; i++) s += a[1][i];

    //所有行进行判断
    for (int i = 1; i <= n; i++) {
        int t = 0;
        for (int j = 1; j <= n; j++) t += a[i][j];
        if (t != s) {
            puts("NO");
            return 0;
        }
    }

    // 所有列进行判断
    for (int j = 1; j <= n; j++) {
        int t = 0;
        for (int i = 1; i <= n; i++) t += a[i][j];
        if (t != s) {
            puts("NO");
            return 0;
        }
    }

    puts("YES");
    return 0;
}