摘要:
洛谷 P5326 [ZJOI2019]开关 https://www.luogu.com.cn/problem/P5326 Tutorial https://www.luogu.com.cn/blog/xht37/solution-p5326 https://www.cnblogs.com/PinkR 阅读全文
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arc099_f Eating Symbols Hard https://atcoder.jp/contests/arc099/tasks/arc099_d Tutorial https://img.atcoder.jp/arc099/editorial.pdf 考虑用哈希来判断序列的相等.设$A$ 阅读全文
摘要:
agc045_e Fragile Balls https://atcoder.jp/contests/agc045/tasks/agc045_e Tutorial https://img.atcoder.jp/agc045/editorial.pdf 将每个球看作一条从$a_i$连向$b_i$的有向 阅读全文