摘要： StarsTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 22464Accepted: 9787DescriptionAstronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian coordinates. Let the level of a star be an amount of the stars that are not higher and not to t 阅读全文

摘要： Ultra-QuickSortTime Limit: 7000MSMemory Limit: 65536KTotal Submissions: 27665Accepted: 9915DescriptionIn this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the sequence is sorted 阅读全文

摘要： Gold minerTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 454Accepted Submission(s): 226Problem 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 阅读全文

摘要： PermutationTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 291Accepted Submission(s): 168Problem DescriptionThere is an arrangement of N numbers and a permutation relation that alter one arrangement into another.For example, when N equals to 6 the 阅读全文

摘要： Xiao Ming's HopeTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 433Accepted Submission(s): 290Problem DescriptionXiao Ming likes counting numbers very much, especially he is fond of counting odd numbers. Maybe he thinks it is the best way to sh 阅读全文

摘要： History repeat itselfTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 460Accepted Submission(s): 223Problem DescriptionTom took the Discrete Mathematics course in the 2011,but his bad attendance angered Professor Lee who is in charge of the course. 阅读全文

摘要： Resource ArchiverTime Limit: 20000/10000 MS (Java/Others)Memory Limit: 100000/100000 K (Java/Others)Total Submission(s): 899Accepted Submission(s): 238Problem DescriptionGreat! Your new software is almost finished! The only thing left to do is archiving all your n resource files into a big one.Wait 阅读全文

摘要： Wireless PasswordTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2189Accepted Submission(s): 610Problem DescriptionLiyuan lives in a old apartment. One day, he suddenly found that there was a wireless network in the building. Liyuan did not know th 阅读全文

摘要： Keywords SearchTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18800Accepted Submission(s): 6269Problem DescriptionIn the modern time, Search engine came into the life of everybody like Google, Baidu, etc.Wiskey also wants to bring this feature to 阅读全文

摘要： Colored SticksTime Limit: 5000MSMemory Limit: 128000KTotal Submissions: 24748Accepted: 6519DescriptionYou are given a bunch of wooden sticks. Each endpoint of each stick is colored with some color. Is it possible to align the sticks in a straight line such that the colors of the endpoints that touch 阅读全文