View Code of Problem 118

#include<stdio.h> 
#include<math.h>
int main()
{
   int n,cnt=1;
   while(scanf("%d",&n)!=EOF)
   {
   	  if(n>0&&n<=3)
   	    printf("Case #%d: 5\n",cnt);
   	  else
   	  {
   	  	 double sum=5;
   	  	 if((n-3)%2==0)
   	  	   sum+=1.5*(n-3);
		 else
		 {
		 	sum+=1.5*(n-3);
		 	sum+=0.5;
		 } 
   	  	 printf("Case #%d: %.0f\n",cnt,sum);  
	  }
	  cnt++;
   }
}