View Code of Problem 13

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