Bob vs ATM

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Due to a shortage of ATMs, a bank decided to convert some arcade gaming machines into ATMs. Unfortunately, due to a bug, the converted machine will only dispense cash if the withdrawer can win the game. The game is played over a valid bracket sequence. Formally, a valid bracket sequence is defined as: 1. An empty string is valid. 2. If `A` is a valid bracket sequence, then `(A)` is also valid. 3.

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solution.cppC++17

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