#include<iostream>
using namespace std;

int main(){
    long long year;
    cin>> year;
    
    
    if(year < 1 || year > 1000000000)
    {
        cout<<"Invalid input"<<endl;
    }
        else if((year % 4 == 0 && year % 100 !=0) || (year % 400 == 0))
        {
            cout<<"Leap year0"<<endl;
        }
        else
        {
            cout<<"Not a leap year"<<endl;
        }
    }
   return 0;
}