0_0_38412547_13229.cpp
0_0_38412547_13229.cpp(10) : error C2065: “cin”: 未声明的标识符
0_0_38412547_13229.cpp(11) : error C2065: “cin”: 未声明的标识符
0_0_38412547_13229.cpp(21) : error C2065: “cout”: 未声明的标识符
0_0_38412547_13229.cpp(21) : error C2065: “endl”: 未声明的标识符
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