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The trick is to check for any number N, what the values for N % 3 and -N % 3 are. Then, think about what it means for the last round.
N % 3
-N % 3
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Kitty and Katty
You are viewing a single comment's thread. Return to all comments →
The trick is to check for any number N, what the values for
N % 3and-N % 3are. Then, think about what it means for the last round.