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#include <bits/stdc++.h>

#include <iostream>

using namespace std;

int main(){

//program to find common element in all rows of matrix in O(mn) time (one traversal).

int m, n;

cin>>m>>n;

int arr[m][n];

for(int i=0;i<m;i++){

for(int j=0;j<n;j++)cin>>arr[i][j];

}

map<int, int> mp;

for(int i=0;i<n;i++){

mp[arr[0][i]] = 1;

}

for(int i=1;i<m;i++){

for(int j=0;j<n;j++){

if(mp[arr[i][j]]==i){

mp[arr[i][j]] = i + 1;

if(i==m-1){

cout<<arr[i][j]<<" ";

}

}

}

}

cout<<endl;

return 0;

}