Computer Programming Contest Preparation

    1 1: Happy
    2 2: birthday
    3 3: to
    4 4: you
    5 1: Happy
    6 2: birthday
    7 3: to
    8 4: you
    9 1: Happy
   10 2: birthday
   11 3: to
   12 4: Rujia
   13 1: Happy
   14 2: birthday
   15 3: to
   16 4: you