#include<fstream>
#include<iostream>
using namespace std;
int a[103],n,s;
int main()
{
	int i,j,k;
	ifstream f("loto.in");
	f>>n>>s;
	for(i=0;i<n;i++)
		f>>a[i];
	f.close();
	ofstream fout("loto.out");
	fout<<"-1"<<"\n";
	fout.close();
	return 0;
}