0_0_19733343_19877.cpp: In function 'int main()':
0_0_19733343_19877.cpp:11:4: error: 'cin' was not declared in this scope
cin>>a>>b>>c>>d;
^
0_0_19733343_19877.cpp:21:7: error: 'cout' was not declared in this scope
cout<<m<<" "<<n<<endl;
^
0_0_19733343_19877.cpp:21:24: error: 'endl' was not declared in this scope
cout<<m<<" "<<n<<endl;
^
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