View Compilation Error

0_0_30708907_13017.cpp
0_0_30708907_13017.cpp(31) : error C2065: “vector”: 未声明的标识符
0_0_30708907_13017.cpp(31) : error C2062: 意外的类型“int” 
0_0_30708907_13017.cpp(37) : error C2065: “v”: 未声明的标识符
0_0_30708907_13017.cpp(37) : error C2228: “.push_back”的左边必须有类/结构/联合
        类型是“unknown-type”
0_0_30708907_13017.cpp(40) : error C2065: “v”: 未声明的标识符
0_0_30708907_13017.cpp(40) : error C2228: “.size”的左边必须有类/结构/联合
        类型是“unknown-type”
0_0_30708907_13017.cpp(46) : error C2065: “v”: 未声明的标识符
0_0_30708907_13017.cpp(46) : error C2228: “.size”的左边必须有类/结构/联合
        类型是“unknown-type”
0_0_30708907_13017.cpp(48) : error C2065: “v”: 未声明的标识符
0_0_30708907_13017.cpp(49) : error C2065: “v”: 未声明的标识符
0_0_30708907_13017.cpp(49) : error C2228: “.size”的左边必须有类/结构/联合
        类型是“unknown-type”