保证AC

#include <bits/stdc++.h>
using namespace std;
int main() {
    int a;
    cin >> a;
    if((a % 400 == 0) || (a % 4 == 0 && a % 100 != 0)){
        cout << "Y" << endl;
    }else{
        cout << "N" << endl;
    }
}