算法竞赛进阶指南 https://github.com/lydrainbowcat/tedukuri http://noi-test.zzstep.com/contest?type=1 https://ac.nowcoder.com/acm/archive/oi-advance/problem 牛客网 https://www.acwing.com/problem/search/1/?csrfmiddlewaretoken=lFgTN3OZ7aYrKmiuFhpRMJFUdT195aJFRYRyPztGFCNy2g0bUB1aN1fJx1E0RyEs&search_content=%E7%AE%97%E6%B3%95%E7%AB%9E%E8%B5%9B%E8%BF%9B%E9%98%B6%E6%8C%87%E5%8D%97 Acwing
汇总 https://vjudge.net/group/challenge
算法竞赛入门到进阶 https://blog.csdn.net/weixin_43914593 https://vjudge.net/article/2033
挑战程序设计竞赛
https://github.com/yogykwan/acm-challenge-workbook
https://book.douban.com/subject/24749842/ https://vjudge.net/article/46 https://vjudge.net/article/755
算法竞赛入门指南
ACM 的正确入门方式是什么？ - 数学lover的回答 - 知乎 https://www.zhihu.com/question/51727516/answer/127265733 [kuangbin带你飞]专题七 线段树