Computer Programming Contest Preparation

    1 r 8.5 17.0 25.5 -8.5
    2 r 0.0 10.3 5.5 0.0
    3 r 2.5 12.5 12.5 2.5
    4 *
    5 2.0 2.0
    6 4.7 5.3
    7 6.9 11.2
    8 20.0 20.0
    9 17.6 3.2
   10 -5.2 -7.8
   11 9999.9 9999.9
   12