#include<iostream>
#include<iomanip>
#include<bitset>
#include<algorithm>
#include<string>
#include<vector>
#include<cstdio>
#include<cmath>
#include<queue>
#include<map>
#include<set>
using namespace std;
using ll=long long;

int main(){
    cout << "-" << endl;
    return 0;
}