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First, start by reading the problem statement for Contest Scoreboard. For this prelude, the input format is the same as the main problem, and you will simply be reading the input and printing it out in the format specified.
Each input line is a four-tuple: contestant number, problem number, time of submission, and result code (L).
1 1 2 10 I 3 1 11 C 1 2 19 R 1 2 21 C 1 1 25 C