【牛客】每日一题

[tokitsukaze and Soldier](https://www.luogu.com.cn/blog/taiqi/tokitsukaze-and-soldier) [合并回文子串](https://www.luogu.com.cn/blog/taiqi/ge-bing-hui-wen-zi-chuan) [数学考试](https://www.luogu.com.cn/blog/taiqi/shuo-xue-kao-shi) [城市网络](https://www.luogu.com.cn/blog/taiqi/cheng-shi-wang-lao) [Rinne Loves Edges](https://www.luogu.com.cn/blog/taiqi/rinne-loves-edges) [月月查华华的手机](https://www.luogu.com.cn/blog/taiqi/yue-yue-zha-hua-hua-di-shou-ji) [Shortest Path](https://www.luogu.com.cn/blog/taiqi/shortest-path) [数码](https://www.luogu.com.cn/blog/taiqi/shuo-ma) [树](https://www.luogu.com.cn/blog/taiqi/post-shu) [黑白树](https://www.luogu.com.cn/blog/taiqi/hei-bai-shu) [Running Median](https://www.luogu.com.cn/blog/taiqi/running-median) [起床困难综合症](https://www.luogu.com.cn/blog/taiqi/qi-chuang-kun-nuo-zeng-ge-zheng) [The XOR Largest Pair](https://www.luogu.com.cn/blog/taiqi/the-xor-largest-pair) [奶牛异或](https://www.luogu.com.cn/blog/taiqi/nai-niu-yi-huo)