#include<bits/stdc++.h>
using namespace std;

int n;

inline int read()
{
 	char ch=getchar();
 	int f=1,x=0;
 	while(ch<'0'||ch>'9')
 	{
		if(ch=='-') f=-1;
		ch=getchar();
 	}
 	while(ch>='0'&&ch<='9')
 	{
		x=x*10+ch-'0';
		ch=getchar();
	}
	return f*x;
}

int main()
{
	ios::sync_with_stdio(0);
	n=read();
	

 	return 0;

}