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===== Prelude to Contest Scoreboard ======

First, start by reading the problem statement for [[http://www.programming-challenges.com/pg.php?page=downloadproblem&probid=110207&format=html|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 out a summary in the format specified.


===== Input =====

Each input line is a four-tuple: contestant number, problem number, time of submission, and result code (L).

===== Output =====

Print the number of contests in the form:

<code>
Number of contests: x
</code>

For each contest, print the number of correct and incorrect submissions as two integers on the same line separated by a space.  

There should be a blank line separating each contest and a blank line separating the first contest from the initial message (and no blank line at the end).

===== Sample Input =====

<code>
2

1 2 10 I
3 1 11 C
1 2 19 R
1 2 21 C
1 1 25 C

1 1 10 C
5 1 10 C
2 1 10 C
4 1 20 I
</code>

===== Sample Output =====

<code>
Number of contests: 2

3 1

3 1
</code>