11715

#include <iostream>
#include <cstdio>
#include <cstdio>
#include <cstring>
#include <vector>
#include <cmath>
#include <cstdlib>

#define INF 1000000
#define ll long long

using namespace std;

int main()
{
	int kase=1;
	int n;
	double u,v,t,a,s;
	while(scanf("%d",&n),n)
	{
		if(n==1)
		{
			scanf("%lf%lf%lf",&u,&v,&t);
			a = (v-u)/t;
			s=u*t+.5*a*(t*t);
			printf("Case %d: %.3lf %.3lf\n",kase++,s,a);
		}
		else if(n==2)
		{
			scanf("%lf%lf%lf",&u,&v,&a);
			t = (v-u)/a;
			s=u*t+.5*a*(t*t);
			printf("Case %d: %.3lf %.3lf\n",kase++,s,t);
		}
		else if(n==3)
		{
			scanf("%lf%lf%lf",&u,&a,&s);
			v = sqrt(u*u+2*a*s);
			t = (v-u)/a;
			printf("Case %d: %.3lf %.3lf\n",kase++,v,t);
		}
		else if(n==4)
		{
			scanf("%lf%lf%lf",&v,&a,&s);
			u = sqrt(v*v-2*a*s);
			t = (v-u)/a;
			printf("Case %d: %.3lf %.3lf\n",kase++,u,t);
		}
	}
	return 0;
}