简单

#include<iostream>
using namespace std;
int is_leap(int n){
    if(n%4==0 && n%100!=0 || n%400==0){
        return true;
    }
    else{
        return false;
    }
}
int main() {
	int n;
	cin >> n;
	if(is_leap(n)) cout << "Y" << endl;
	else cout << "N" << endl;
   return 0;
}