Simulation

Execute the described process faithfully; edge cases and detail are the challenge.

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1. 100 The 3n + 1 Problem 在 [i, j] 區間內，取每個數最長的 3n+1 序列；特別要注意的是 i 可能大於 j。 Solved ★☆☆☆☆ Simulation ·Ad Hoc