#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	float h;
	cin>>h;
	if(h/1.2<h/3.0+50.0)
	cout<<"Walk";
	else if(h/1.2>h/3.0+50.0)
	cout<<"Bike";
	else
	cout<<"All";
}