题解

#include <iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n%4==0){
        if(n%400==0){
            cout<<'Y'<<endl;
        }else if(n%100==0){
            cout<<'N'<<endl;
        }else{
            cout<<'Y'<<endl;
        }
    }else{
        cout<<'N'<<endl;
    }
    return 0;
}