Light OJ 1056

#include<bits/stdc++.h>
using namespace std;

typedef long long int           ll;
typedef unsigned long long int  ull;
typedef vector<int>             vi;
typedef vector<vi>              vvi;
typedef pair<int,int>           pii;
typedef vector< pii >           vpii;
typedef set<int>                sti;

#define pb                      push_back
#define pob                     pop_back
#define mp                      make_pair
#define ff                      first
#define ss                      second
#define loop1(i,n)              for(int i=1; i<=int(n); i++)
#define loop(i,y)               for(int i=0; i<int(y); i++)
#define read()                  freopen("input.txt", "r", stdin)
#define write()                 freopen("output.txt", "w", stdout)
#define cspf(i)                 printf("Case %d: ", i)
/// Constants
#define eps                     1e-9
#define PI                      acos(-1.0)  // 3.1415926535897932

int main()
{
    int n,i;
    scanf("%d",&n);
    loop1(i,n){
        double w,l,r,s,angle,x;
        scanf("%lf : %lf",&l,&w);
        cspf(i);
        r=(sqrt(w*w+l*l))/2;
        angle=acos((r*r+r*r-w*w)/(2*r*r));
        s=r*angle;
        x=400/(2*s+2*l);
        l=l*x;
        w=w*x;
        printf("%lf %lf\n",l,w);
    }
    return 0;
}