Computer Programming Contest Preparation

    1 5
    2 
    3 3 1 2
    4 32.0 54.7 -2
    5 
    6 4 1 3 2
    7 -9.1 +3. .9 .7
    8 
    9     1 2 3
   10     .1 .2 .3
   11 
   12     4 3 2 1
   13     -7.  +.3  .9     9.9
   14 
   15     1 2
   16     1. 2.3
   17