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0_0_18297397_20027.cpp
0_0_18297397_20027.cpp(4) : error C2065: “vector”: 未声明的标识符
0_0_18297397_20027.cpp(4) : error C2062: 意外的类型“bool” 
0_0_18297397_20027.cpp(5) : error C2065: “num”: 未声明的标识符
0_0_18297397_20027.cpp(6) : error C3861: “sqrt”:  找不到标识符
0_0_18297397_20027.cpp(8) : error C2065: “num”: 未声明的标识符
0_0_18297397_20027.cpp(10) : error C2065: “num”: 未声明的标识符
0_0_18297397_20027.cpp(15) : error C2065: “num”: 未声明的标识符