#include "bits/stdc++.h"

//#include <atcoder/all>

using namespace std;
//using namespace atcoder;

//#define int long long
#define ll long long

ll INF = (1LL << 60);
int mod = 1000000007;

using P = pair<int, int>;

signed main() {
	cout << -1 << endl;
	return 0;
}