Computer Programming Contest Preparation

    1 2
    2 
    3 1 2 10 I
    4 3 1 11 C
    5 1 2 19 R
    6 1 2 21 C
    7 1 1 25 C
    8 
    9 1 2 10 I
   10 3 1 11 C
   11 1 2 19 R
   12 1 2 21 C
   13 1 1 25 C
   14 
   15