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