#include <iostream>
using namespace std;
 
int main() {
    int N;
    cin >> N;
 
    int matriz[N][N];
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            cin >> matriz[i][j];
        }
    }
    bool diagonalesIguales = true;
 
    for (int i = 0; i < N; i++) {
        if (matriz[i][i] != matriz[i][N-i-1]) {
            diagonalesIguales = false;
            break;
        }
    }
    if (diagonalesIguales) {
        cout << "Iguales " << endl;
    } else {
        cout << "No iguales" << endl;
    }
 
    return 0;
}

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6
1 1 1 1 1 1
1 1 3 0 1 1
1 2 1 1 1 1
4 3 3 3 3 3
5 1 1 1 1 5
6 1 2 2 1 6