#include <iostream>
#include <cstring>
using namespace std;
int main() {
int mat[100][100];
int n, m;
cin >> n >> m;
for (int i = 0; i < n; i++)
for (int j = 0; j < m; j++)
cin >> mat[i][j];
for (int j = 0; j < m; j++) {
int gasit_toate_liniile = 1;
for (int lin = 1; lin < n; lin++) {
int gasit_linie = 0;
for (int col = 0; col < m; col++) {
if (mat[lin][col] == mat[0][j]) {
gasit_linie = 1;
break;
}
}
if (gasit_linie == 0) {
gasit_toate_liniile = 0;
break;
}
}
if (gasit_toate_liniile)
cout << mat[0][j] << " ";
}
cout << "\n";
return 0;
}
