[{"title":"(7个子文件6.15MB)2019_MCM_ICM_Problems.zip","children":[{"title":"2019_MCM_ICM_Problems","children":[{"title":"2019_ICM_Problem_D.pdf <span style='color:#111;'>423.24KB</span>","children":null,"spread":false},{"title":"2019_ICM_Problem_E.pdf <span style='color:#111;'>142.98KB</span>","children":null,"spread":false},{"title":"2019_MCM_Problem_B.pdf <span style='color:#111;'>791.63KB</span>","children":null,"spread":false},{"title":"2019_MCM_Problem_C.pdf <span style='color:#111;'>399.92KB</span>","children":null,"spread":false},{"title":"2019_MCMProblemC_DATA.zip <span style='color:#111;'>4.23MB</span>","children":null,"spread":false},{"title":"2019_ICM_Problem_F.pdf <span style='color:#111;'>232.23KB</span>","children":null,"spread":false},{"title":"2019_MCM_Problem_A.pdf <span style='color:#111;'>139.14KB</span>","children":null,"spread":false}],"spread":true}],"spread":true}]