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Problem DescriptionThe light travels in a straight line and always goes in the minimal path between two points, are the basic laws of optics.Now, our problem is that, if a branch of light goes

Problem of Apollonius                                                                          Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)               

Problem DescriptionGiven four points ABCD, if ABCD is a tetrahedron, calculate the inscribed sphere of ABCD. InputMultiple test cases (test cases ≤100).Each test cases contains a