摘要：
Given 2 permutations of integers from 1 to N, you need to find the minimum number of operations necessary to change both or any one of them in such a ... 阅读全文
摘要：
小明系列问题――小明序列Time Limit:1000MSMemory Limit:32768KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeHDU 4521Description 大家都知道小明最喜欢研究跟序列有关的问题了，可是也就因为这样，... 阅读全文
摘要：
Magic NumberTime Limit:1000MSMemory Limit:65536KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeHDU 4323DescriptionThere are many magic numbers whos... 阅读全文