#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)){
        cout<<"Leap year";
    }
    else{
        cout << " Not a leap year ";
    }
    return 0;
}