#include <iostream>
using namespace std;
int main(){
double m;
cin >> m;
string s = "All";
double bikeTime = m / 3.0 + 50;
double walkTime = m / 1.2;
if ( bikeTime < walkTime )
s = "Bike";
else if (bikeTime > walkTime)
s = "Walk";
cout << s << endl;
return 0;
}