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{"workbook":{"problemsBrief":"{\"POJ-3169\":[\"Layout\",7273,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+December+Gold\\\"\\u003eUSACO 2005 December Gold\\u003c/a\\u003e\\u003c/div\\u003e\"]}","joined":false,"groups":{}},"managingGroups":{},"author":"hanaoran","updateTime":1671354695000,"title":"作业","dislikeCnt":0,"content":"[problem:POJ-3169]","threadId":134550,"likeCnt":0,"createTime":1671354648000,"isWorkbook":true,"viewCnt":299,"openness":2,"fav":false,"id":3359,"trustable":false}