#include <bits/stdc++.h>

using namespace std;

int main() { int a;

cin >> a;

if (a % 4 == 0 && a % 100 != 0)
{
    cout << "Y";
}
else if (a % 400 == 0)
{
    cout << "Y";
}
else
{
    cout << "N";
}

return 0;

}