摘要： TautologyTime Limit:1000MSMemory Limit:65536KTotal Submissions:5306Accepted:1997DescriptionWFF '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 symbo 阅读全文

摘要： Crashing RobotsTime Limit:1000MSMemory Limit:65536KTotal Submissions:4825Accepted:2115DescriptionIn a modernized warehouse, robots are used to fetch the goods. Careful planning is needed to ensure that the robots reach their destinations without crashing into each other. Of course, all warehouses ar 阅读全文

摘要： TilingTime Limit:1000MSMemory Limit:65536KTotal Submissions:5935Accepted:2893DescriptionIn 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 sequence of lines, each line containing an integer number 0 <= n <= 250.OutputFo 阅读全文

摘要： Ubiquitous ReligionsTime Limit:5000MSMemory Limit:65536KTotal Submissions:16083Accepted:7764DescriptionThere are so many different religions in the world today that it is difficult to keep track of them all. You are interested in finding out how many different religions students in your university b 阅读全文

摘要： Y2K Accounting BugTime Limit:1000MSMemory Limit:65536KTotal Submissions:6101Accepted:2982DescriptionAccounting for Computer Machinists (ACM) has sufferred from the Y2K bug and lost some vital data for preparing annual report for MS Inc.All what they remember is that MS Inc. posted a surplus or a def 阅读全文

摘要： Power of CryptographyTime Limit:1000MSMemory Limit:30000KTotal Submissions:12219Accepted:6251DescriptionCurrent 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 results fr 阅读全文

摘要： Radar InstallationTime Limit:1000MSMemory Limit:10000KTotal Submissions:30071Accepted:6607DescriptionAssume 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 on the 阅读全文

摘要： The Pilots Brothers' refrigeratorTime Limit:1000MSMemory Limit:65536KTotal Submissions:11462Accepted:4200Special JudgeDescriptionThe game “The Pilots Brothers: following the stripy elephant” has a quest where a player needs to open a refrigerator.There are 16 handles on the refrigerator door. Ev 阅读全文

摘要： Flip GameTime Limit:1000MSMemory Limit:65536KTotal Submissions:17012Accepted:7377DescriptionFlip game is played on a rectangular 4x4 field with two-sided pieces placed on each of its 16 squares. One side of each piece is white and the other one is black and each piece is lying either it's black 阅读全文

摘要： Text ReverseTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7548Accepted Submission(s): 2869Problem DescriptionIgnatius likes to write words in reverse way. Given a single line of text which is written by Ignatius, you should reverse all the words 阅读全文