#include<iostream>
using namespace std;
int main(){
    long long year;
    cin>>year;
    if(year<1 || year>1e9){
        cout << "Invalid input"<<endl;
        return 0;
    }
    if((year %400 == 0)) || (year % 4 == 0 && year % 100 !=0)){
        cout<<"Leap year"<<endl;
    }
    else{
        cout<<"Not a leap year"<<endl;
    }
    return 0;
}