#include<bits/stdc++.h>
using namespace std;
int main(){
    ios::sync_with_stdio(false);
    ifstream fin; ofstream fout;
    fin.open("test.in", ios::in);
    fout.open("test.out", ios::out);
    //output something
    fout<<endl;
    fin.close();
    fout.close();
    return 0;
}