Input
The input will contain data for a number of test cases. For each test case, there will be one line of data,
containing values of L, P and V , in that order. All input integers can be represented by signed 32-bit
integers. End of data will be signaled by a line containing three zeros, which will not be processed.
Output
There will be one line of output for each test case. It will display the case number and the number of
days Happy Camper Harry can occupy a campsite during his vacation. The format is illustrated by
the sample output.
Sample Input
5 8 20
5 8 17
0 0 0
Sample Output
Case 1: 14
Case 2: 11

代碼例如以下：

#include<stdio.h>
#define ll long long
int main()
{
	ll l,p,v;
	ll ans,temp;
	int cas=1;
	while(scanf("%lld %lld %lld",&l,&p,&v)!=EOF)
	{
		if(l==0 && p==0 && v==0)
			break;
		temp=v%p;
		if(temp>=l)
		{
			temp = l;
		}
		ans=(v/p)*l+temp;
		
		printf("Case %d: ",cas++);
		printf("%lld\n",ans);
	}
	return 0;
}