1927. Sum Game
Alice and Bob take turns playing a game, with Alice starting first. You are given a string num of even length consisting of digits and '?' characters. On each turn, a player will do the following if there is still at least one '?' in num: - Choose an index i where num[i] == '?'. - Replace num[i] with any digit between '0' and '9'. The game ends when there are no more '?' characters in num. Fo
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solution.cppC++17
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