#include<stdio.h>
int main(){
    double d;
    scanf("%lf",&d);
    double x,y;
    x=d/1.2;
    y=d/3+23+27;
    if(x>y){
        printf("Bike");
    }
    else if(x<y){
        printf("Walk");
    }
    else if(x==y){
    	printf("All");
	}
    return 0;
}