#include<iostream>
#include<cstdio>
#include<cmath>
#include<cstdlib>
#include<ctime>
#include<cstring>
#include<string>
#include<algorithm>
#include<bitset>
#include<vector>
#include<queue>
#include<deque>
#include<stack>
#include<map>
#include<set>
using namespace std;

int main(){
	freopen(".in","r",stdin);
	freopen(".out","w",stdout);
	
	return 0;
}

