//Matija Herceg
#include<iostream>
#include<cmath>
#include<cstring>
#include<cstdio>
#include<cstdlib>
#include<vector>
#include<fstream>
#include<string>
#include<algorithm>
#include<list>

using namespace std;

int main(){
    int n,m,a;
    cin>>n>>m;
    for (int i=0; i<n; i++)
    for (int j=0; j<m+4; j++)
    cin>>a;
    cout<<"-1";
    //system("pause");
    return 0;
}