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