0_0_39195631_29099.cpp
0_0_39195631_29099.cpp(4) : error C2065: “cin”: 未声明的标识符
0_0_39195631_29099.cpp(8) : error C2065: “cin”: 未声明的标识符
0_0_39195631_29099.cpp(13) : error C2065: “cout”: 未声明的标识符
0_0_39195631_29099.cpp(13) : error C2065: “endl”: 未声明的标识符
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