// editor2
#include<iostream>
using namespace std;
int main()
{
    long long year;
    cin>>year;
    
    if(year<1 || year>1000000000)
    {
        cout<<"Invalid input";
        return 0;
    }
    
    if((year % 400 == 0) || (year % 4==0 & year%100 !=0))
    {
        cout<<"Leap year";
    }
    else
    {
        cout<<"Not a leap year"
    }
    return 0;
}