摘要:
线段树的讲解https://www.bilibili.com/video/av47331849?from=search&seid=16724415639232651392 A - 敌兵布阵 题目: C国的死对头A国这段时间正在进行军事演习,所以C国间谍头子Derek和他手下Tidy又开始忙乎了。A国 阅读全文
摘要:
Lose it! You are given an array aa consisting of nn integers. Each aiai is one of the six following numbers: 4,8,15,16,23,424,8,15,16,23,42 . Your tas 阅读全文