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Power StringsTime Limit:3000MSMemory Limit:65536KTotal Submissions:27230Accepted:11401DescriptionGiven two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef". If we think of concatenation as multiplicatio 阅读全文
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OulipoTime Limit:1000MSMemory Limit:65536KTotal Submissions:16965Accepted:6821DescriptionThe French author Georges Perec (1936–1982) once wrote a book, La disparition, without the letter'e'. He was a member of the Oulipo group. A quote from the book:Tout avait Pair normal, mais tout s’affirm 阅读全文
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Cinema in AkibaTime Limit:3 Seconds Memory Limit:65536 KBCinema in Akiba (CIA)is a small but very popular cinema inAkihabara. Every night the cinema is full of people. The layout ofCIAis very interesting, as there is only one row so that every audience can enjoy the wonderful movies without any anno 阅读全文
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Buy TicketsTime Limit:4000MSMemory Limit:65536KTotal Submissions:10464Accepted:5069DescriptionRailway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue…The Lunar New Year was approaching, but unluckily the Little Cat still had schedules g 阅读全文