摘要：
Tautology Description WFF 'N PROOF is a logic game played with dice. Each die has six faces representing some subset of the possible symbols K, A, N, 阅读全文
摘要：
TilingTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 7264Accepted: 3528DescriptionIn how many ways can you tile a 2xn rectangle by 2x1 or 2x... 阅读全文