194711_0_21003.cpp
194711_0_21003.cpp(6) : error C2065: 'cin' : undeclared identifier
194711_0_21003.cpp(20) : error C2065: 'cout' : undeclared identifier
194711_0_21003.cpp(20) : error C2065: 'endl' : undeclared identifier
194711_0_21003.cpp(20) : warning C4552: '<<' : operator has no effect; expected operator with side-effect
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