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2019年9月28日
【2019多校】Make Rounddog Happy（分治）
摘要： Rounddog always has an array a1,a2,⋯,ana1,a2,⋯,an in his right pocket, satisfying 1≤ai≤n1≤ai≤n . A subarray is a non-empty subsegment of the original 阅读全文
posted @ 2019-09-28 20:59 Through_The_Night 阅读(261) 评论(0) 推荐(0) 编辑