2021年8月4日
问题 D: Cow Photography
摘要： The cows are in a particularly mischievous mood today! All Farmer John wants to do is take a photograph of the cows standing in a line, but they keep 阅读全文
posted @ 2021-08-04 21:25 梨花满地 阅读(90) 评论(0) 推荐(0)
问题 L: Special Subsets
摘要： 题目描述 Let S be a set composed of all integers from 1 through N. f is a function from S to S. You are given the values f(1),f(2),⋯,f(N) as f1,f2,⋯,fN. F 阅读全文
posted @ 2021-08-04 21:19 梨花满地 阅读(41) 评论(0) 推荐(0)
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