Computer Programming Contest Preparation

    1 -10000
    2     -999
    3     -6
    4     -5
    5     -4
    6     -3
    7     -2
    8     -1
    9     0
   10     1
   11     2
   12     3
   13     4
   14     5
   15     6
   16     7
   17     8
   18     9
   19     10
   20     11
   21     12
   22     13
   23     14
   24     15
   25     16
   26     17
   27     18
   28     19
   29     20
   30     25
   31     30
   32     100
   33     10000
   34