View Code of Problem 13

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