#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */
    
    int t;
    cin>>t;
    
    while(t--)cout<<-1<<endl;
    return 0;
}