#include<bits/stdc++.h>
using namespace std;
int rd(int x=0,char c=getchar()){while(!isdigit(c))c=getchar();while(isdigit(c))x=x*10+(c^48),c=getchar();return x;}

int main(){
	freopen("CON","w",stdout);
	system("cls");
	return 0;
}