#include<iostream>
#include<cstdio>
#include<cctype>
#include<string.h>
#include<math.h>
#include<cmath>
#include<algorithm>
#include<iomanip>
using namespace std;
int main()
{
	int a;
	cin>>a;
	if((a%4==0&&a%100!=0)||a%400==0)
	{
		cout<<"Y";	
	} 
	else
	{
		cout<<"N";
	}
	return 0;
}