21 Days Training // Day 14 Posted on 2025年8月8日2025年8月8日 By c2022zyh 21 Days Training // Day 14无评论 T2. interseting No idea, skip. T3. paltree (Extremely) Incomplete idea : For every palindrome string, record the node pairs that have the same character, Find the number of blocks that have different characters. Pages: 1 2 3 4 5 6 训练日志