#include<iostream>
using namespace std;

int main() {
    long long year;
    cin >> year;
    
    if (year < 1) {
        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;
    
}