AC

#include<iostream>
using namespace std;

// 完成闰年判定 is_leap 函数
bool is_leap(int year)
{
if(year%40 and (year%100!=0 or year%4000))
return 1;
return 0;
}
int main() {

int n;
cin >> n;
if(is_leap(n)) cout << "Y" << endl;
else cout << "N" << endl;

return 0;
}