Code Jam 2014 - Problem A (Magic Trick) and Problem B (Cookie Clicker Alpha)

I was flying home from San Francisco and had 2 hours to spare. I solved problems A and B which were enough to pass the qualification round.

Problem A: Magic Trick

Difficulty: Easy. This was a basic set theory check

Problem B: Cookie Clicker Alpha

Difficulty: Easy/Medium. This solution works for both small and large inputs.