A298.判断闰年题解

#include<iostream>
using namespace std;
int main(){
    int a;
    cin>>a;
    if(a%4==0){
        if(a%400==0){
            cout<<"Y";
        }
        else if(a%100!=0){
            cout<<"Y";
        }
        else{
            cout<<"N";
        }
    }
    else{
        cout<<"N";
    }
}