Topcoder SRM 543; A lesson in initializing your variables

Topcoder SRM 543 could have been my best performing SRM, and I was pretty sure before the systests update for me, that it is going to be so. I was bound to end up in the top 10, what with my quick submission to easy problem, reasonably quick submission to medium, and three successful challenges. But there were surprises in the wait for me, and not happy ones.
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