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D. Subway D. Subway A subway scheme, classic for all Berland cities is represented by a set of n stations connected by n passages, each of which conne 阅读全文
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C. The World is a Theatre C. The World is a Theatre There are n boys and m girls attending a theatre club. To set a play "The Big Bang Theory", they n 阅读全文
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String Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Problem Description There is a string S.S only contain lower c 阅读全文