#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	if(50>=a){
		cout<<"Walk";
	}else if(a/6/5>(a-50)/3){
		cout<<"walk";
	}else if(a/6/5==(a-50)/3){
		cout<<"All";
	}else{
		cout<<"Bike";
	}
	return 0;
}