dyhaohaoxuexi

摘要： We all know that you can’t put a round peg in a square hole. Asking you to do so in this contestwould be cruel and unusual punishment, which is banned 阅读全文

摘要： Arup has just created a data structure that makes the two following list transformations in constant O(1) time:a. Take any element in the list and mov 阅读全文