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D - A Bug's Life 二分图 并查集 BackgroundProfessor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two dif 阅读全文
posted @ 2019-09-23 22:47
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B B - Local Extrema CodeForces - 888A You are given an array a. Some element of this array ai is a local minimum iff it is strictly less than both of 阅读全文
posted @ 2019-09-23 16:30
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