一本通1055

//qf
#include <bits/stdc++.h>
#define f(i,j,n) for(register int i=j;i<=n;i++)
using namespace std;
typedef long long ll;
inline ll read(){
	ll x=0;
	int f=1;
	char ch=getchar();
	while(!isdigit(ch)) {
		if(ch=='-') f=-1;
		ch=getchar();
	}
	while(isdigit(ch)) x=(x<<1)+(x<<3)+ch-48,ch=getchar();
	return x*f;
}
signed main(){
	int n=read();
	if(n%4==0){
	    if(n%100==0) puts(n%400?"N":"Y");
        else puts("Y");
    }
    else puts("N");
 	return 0;
}