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Alice and Bob are playing a stone game. Initially there are n piles of stones and each pile contains some stone. Alice stars the game and they alterna 阅读全文
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2011 was a crazy year. Many people all over the world proposed on 11-11-11, married on 11-11-11, some even went through surgery only to have 11-11-11 阅读全文
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A seven segment display, or seven segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to 阅读全文
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Recently, the ACM/ICPC team of Marjar University decided to choose some new members from freshmen to take part in the ACM/ICPC competitions of the nex 阅读全文
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D. MUH and Cube Walls D. MUH and Cube Walls Polar bears Menshykov and Uslada from the zoo of St. Petersburg and elephant Horace from the zoo of Kiev g 阅读全文
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The Suspects Time Limit: 1000MS Memory Limit: 20000K Total Submissions: 37090 Accepted: 17980 Description Severe acute respiratory syndrome (SARS), an 阅读全文
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Leo has a grid with N × N cells. He wants to paint each cell with a specific color (either black or white). Leo has a magical brush which can paint an 阅读全文
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Leo has a grid with N rows and M columns. All cells are painted with either black or white initially. Two cells A and B are called connected if they s 阅读全文
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B - Problem Arrangement Time Limit:2000MS Memory Limit:65536KB 64bit IO Format:%lld & %llu Submit Status Practice ZOJ 3777 B - Problem Arrangement Sub 阅读全文
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给出两个字符串A B，求A与B的最长公共子序列（子序列不要求是连续的）。 比如两个串为： abcicba abdkscab ab是两个串的子序列，abc也是，abca也是，其中abca是这两个字符串最长的子序列。 给出两个字符串A B，求A与B的最长公共子序列（子序列不要求是连续的）。 比如两个串为 阅读全文