[HackerEarth] Mastermind is a bright student of his class. To judge his intellegence and speed his teacher has given him a question and he needs your help for solving it. The question is : - 题解

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题目信息
题号 P18684
标题 [HackerEarth] Mastermind is a bright student of his class. To judge his intellegence and speed his teacher has given him a question and he needs your help for solving it. The question is :
难度 普及
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