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http://codeforces.com/gym/101889 A B - Buggly ICPC 在写一串字符串时,每当写到元音字母就会时整体字符串翻转一次,问得到目标字符串有几种书写方式。 分情况讨论,只有辅音时只有一种,每次翻转必有一个元音字母到首位,多个元音存在时,只与最开始要书写的元音字 阅读全文
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BaoBao and DreamGrid are playing a game using a strange button. This button is attached to an LED light (the light is initially off), a counter and a 阅读全文
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God Water likes to eat meat, fish and chocolate very much, but unfortunately, the doctor tells him that some sequence of eating will make them poisono 阅读全文
摘要:
After the long vacation, the maze designer master has to do his job. A tour company gives him a map which is a rectangle. The map consists of N×M litt 阅读全文