[{"title":"(2个子文件812B)数学建模席位分配问题","children":[{"title":"席位分配","children":[{"title":"xiwei.m <span style='color:#111;'>275B</span>","children":null,"spread":false},{"title":"xiweifenpei.m <span style='color:#111;'>706B</span>","children":null,"spread":false}],"spread":true}],"spread":true}]