#include <iostream>
using namespace std ;
 int main(){
     int a   ;
    cin>>a ;
     if (a<= 0 ){
       cout<<"Invalid input";
       
     }
     else if (a % 400 == 0 || (a % 4 == 0 || a % 100 == 0){
         cout<<"Leap year" ;
     }
     else{
         cout<<"Not a leap year" ; 
     }
 }