View Code of Problem 13

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

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