#include <iostream>
#include <stdio.h>
#include <vector>
using namespace std;
 
struct data
{
	float x;
	float y;
	float m;
} typedef data;
 
vector <data> M;	//<=> M[];
 
float BS_y (float front, float back)
{
	float mid=(front+back)/2;
	float SUM=0.0;
	for (int i=0; i<M.size(); i++)
	{
		float x=M[i].x;
		float m=M[i].m;		
		SUM+=(m*(mid-x));
	}
	long long tg = (long long)(SUM*100);
	if (tg==0) return mid;
	else if (tg>0) return BS_y (front, mid);
	else return BS_y (mid, back);
}
 
float BS_x (float front, float back)
{
	float mid=(front+back)/2;
	float SUM=0.0;
	for (int i=0; i<M.size(); i++)
	{
		float y=M[i].y;
		float m=M[i].m;		
		SUM+=(m*(mid-y));
	}
	long long tg = (long long)(SUM*100);
	if (tg==0) return mid;
	else if (tg>0) return BS_x (front, mid);
	else return BS_x (mid, back);
}
 
int main ()
{
	int n;
	int t=0;
	while (1)
	{
		cin>>n;
		if (n<0) break;
		t++;
		data tg;
		float xMax=0, xMin=0;
		float yMax=0, yMin=0;
		for (int i=1; i<=n; i++)
		{
			cin>>tg.x>>tg.y>>tg.m;
			M.push_back(tg);	//Them mang;
			if (i==1)
			{
				xMax=tg.x;	xMin=tg.x;
				yMax=tg.y;	yMin=tg.y;
			}
			else
			{
				if (tg.x > xMax) xMax=tg.x;
				if (tg.x < xMin) xMin=tg.x;
				if (tg.y > yMax) yMax=tg.y;
				if (tg.y < yMin) yMin=tg.y;
			}
		}
		printf ("Case %d: %.2f %.2f\n",t, BS_y (xMin, xMax), BS_x (yMin, yMax));
		M.clear();	//Xoa mang;
	}
	return 0;
}