题解

#include <bits/stdc++.h>
using namespace std;

bool Leap_Year(int a){
	if (a % 4 == 0 && a % 100 != 0 || a % 400 == 0){
    	return true;
    }
    else {
    	return false;
    }
}

int main(){
	int a;
    cin >> a;
    if (Leap_Year(a)) cout << "Y";
    else cout << "N";
    return 0;
}