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ParencodingsDescriptionLet S = s1 s2...s2n be a well-formed string of parentheses. S can be encoded in two different ways: q By an integer sequence P ... 阅读全文
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TautologyDescriptionWFF 'N PROOF is a logic game played with dice. Each die has six faces representing some subset of the possible symbols K, A, N, C,... 阅读全文
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TilingDescriptionIn how many ways can you tile a 2xn rectangle by 2x1 or 2x2 tiles?Here is a sample tiling of a 2x17 rectangle.InputInput is a sequenc... 阅读全文
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Ubiquitous ReligionsDescriptionThere are so many different religions in the world today that it is difficult to keep track of them all. You are intere... 阅读全文
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Y2K Accounting BugDescriptionAccounting for Computer Machinists (ACM) has sufferred from the Y2K bug and lost some vital data for preparing annual rep... 阅读全文
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Radar InstallationDescriptionAssume the coasting is an infinite straight line. Land is in one side of coasting, sea in the other. Each small island is... 阅读全文