#include <iostream>
using namespace std;
int a;
int main(){
	cin>>a;
	if(50+a/3.0>a/1.2) cout<<"Walk";
	if(50+a/3.0==a/1.2) cout<<"All";
	if(50+a/3.0<a/1.2) cout<<"Bike";
    return 0;
}