[HackerEarth] The average miner Sehdev took refresher courses. As soon as a miner completes the courses, he should take exams. The hardest one is a computer test called "Refreshed Mind". - 题解

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题目信息
题号 P20621
标题 [HackerEarth] The average miner Sehdev took refresher courses. As soon as a miner completes the courses, he should take exams. The hardest one is a computer test called "Refreshed Mind".
难度 普及
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