UVA 11646 - Athletics Track

#include<iostream>
#include<iomanip>
#include<cmath>
using namespace std;

const double pi=acos(-1);

int main(){
//	freopen("data.txt","r",stdin);
	ios::sync_with_stdio(false);
	double a,b;
	char aa;
	int kase=1;
	while(cin>>a>>aa>>b){
		double alpha=atan(a/b);
		double tmp=(sqrt(a*a+b*b))/a;
		double x=200/(pi*tmp/2-alpha*tmp+1);
		double y=b*x/a;
		cout<<"Case "<<kase++<<": "<<setiosflags(ios::fixed)<<setprecision(5)<<x<<' '<<y<<endl;
	}
	return 0;
}