正解，留下我的足迹

#include<iostream>
using namespace std;

int is_leap(int x){
    if(x%4==0&&x%100!=0||x%400==0) return true;
    else return 0;
}
int main() {
	int n;
	cin >> n;
	if(is_leap(n)) cout << "Y" << endl;
	else cout << "N" << endl;
    
   return 0;
}