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{"workbook":{"problemsBrief":"{\"LibreOJ-3692\":[\"洒水器\",145,\"JOISC 2022 Day3\"]}","joined":false,"groups":{}},"managingGroups":{},"author":"lostintianyi","updateTime":1699153355000,"title":"经典题汇总","dislikeCnt":0,"content":"## 数据结构\n### 树上操作\n[problem:LibreOJ-3692]树上邻域操作","threadId":175362,"likeCnt":0,"createTime":1699153355000,"isWorkbook":true,"viewCnt":155,"openness":2,"fav":false,"id":4245,"trustable":false}