0_0_35933056_2358.cpp 0_0_35933056_2358.cpp(28) : error C3861: “max”: 找不到标识符 0_0_35933056_2358.cpp(42) : error C2065: “root”: 未声明的标识符 0_0_35933056_2358.cpp(62) : error C3861: “max”: 找不到标识符