摘要: # Educational Codeforces Round 33 (Rated for Div. 2) https://codeforces.com/contest/893 昨日vp,今日补完F D贪心,思路值得学习; E组合数学推式子,式子不难,关键在于模型抽象 F主席树,调了老半天,关键在于要 阅读全文
posted @ 2023-07-16 19:44 Sakana~ 阅读(15) 评论(1) 推荐(1) 编辑