View Code of Problem 13

#include <stdio.h>
int main()
{
	int h,a,b,k;
	int bf,i,j=1;
	while(scanf("%d %d %d %d",&h,&a,&b,&k)!=EOF)
	{
		bf=1;
		for(i=0;i<k&&bf;i++)
		{
			h=h-a;	
			if(h<1) bf=0;
			else h+=b;			
		}
		if(!bf) printf("Case #%d: White win\n",j);
		else printf("Case #%d: Unknow\n",j);
		j++;
	}
	return 0;
}