#include <bits/stdc++.h>

using namespace std;

int a[1010][1010],n;

bool sovp(int x) {

for (int i = 1; i <= n; i++)

 if (a[x][i] != a[i][x]) return 0;

return 1;

}

main () {

cin >>n;

for (int i = 1; i <= n; i++)

 for (int j = 1; j <= n; j++)

  cin >>a[i][j];

for (int i = 1; i <= n; i++)

{

 if (sovp(i) == 1) cout <<i <<" ";

}

}