勇敢的炮灰

摘要： 点击打开链接TautologyTime Limit:1000MSMemory Limit:65536KTotal Submissions:8127Accepted:3115DescriptionWFF '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, E, p, q, r, s, t. A Well-formed formula (WFF) is any string of these 阅读全文

摘要： 点击打开链接Power of CryptographyTime Limit:1000MSMemory Limit:30000KTotal Submissions:16388Accepted:8285DescriptionCurrent work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area has resulted in the practical use of resu 阅读全文

摘要： 点击打开链接Radar InstallationTime Limit:1000MSMemory Limit:10000KTotal Submissions:43490Accepted:9640DescriptionAssume the coasting is an infinite straight line. Land is in one side of coasting, sea in the other. Each small island is a point locating in the sea side. And any radar installation, locating 阅读全文