关注我，包回关

#include <iostream>
using namespace std;
int main(){
int Y;
cin >> Y;
if (Y%40 && Y%100!=0){
cout << "Y" << endl;
return 0;}
if (Y%1000 && Y%400==0){
cout << "Y" << endl;
return 0;}
else{
cout << "N" << endl;
return 0;}
return 0;
//说一句，<在应该呈现出小于号的样子
}