摘要：B - Round NumbersCrawling in process... Crawling failed Time Limit:2000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u Submit StatusDescriptionThe cows, as you know, have no fingers or thumbs and thus are unable to play Scissors, Paper, Stone' (also known as 'Rock, Paper, Scissors& 阅读全文

摘要：Paths on a GridTime Limit: 1000MSMemory Limit: 30000KTotal Submissions: 17613Accepted: 4262DescriptionImagine you are attending your math lesson at school. Once again, you are bored because your teacher tells things that you already mastered years ago (this time he's explaining that (a+b)2=a2+2a 阅读全文

摘要：B. Merlininice’s HometaskFont: Times New Roman | Verdana | GeorgiaFont Size: ← →Problem DescriptionMerlininice dosen’t love math lessons, so he always ditches math class. But as the final exam is coming, now Merlininice is really regret his actions and wants to get a good mark for math. For that Ms. 阅读全文

摘要：Gold minerTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 0Accepted Submission(s): 0Problem DescriptionHomelesser likes playing Gold miners in class. He has to pay much attention to the teacher to avoid being noticed. So he always lose the game. Af 阅读全文

摘要：CipherDescriptionBob and Alice started to use a brand-new encoding scheme. Surprisingly it is not a Public Key Cryptosystem, but their encoding and decoding is based on secret keys. They chose the secret key at their last meeting in Philadelphia on February 16th, 1996. They chose as a secret key a.. 阅读全文

摘要：A Famous Stone CollectorProblem DescriptionMr. B loves to play with colorful stones. There are n colors of stones in his collection. Two stones with the same color are indistinguishable. Mr. B would like toselect some stones and arrange them in line to form a beautiful pattern. After several arrange 阅读全文