src.cpp: In function 'int main()':
src.cpp:7:29: error: 'stdin' was not declared in this scope
freopen("PIXEL.INP","r",stdin);
^
src.cpp:7:34: error: 'freopen' was not declared in this scope
freopen("PIXEL.INP","r",stdin);
^
src.cpp:8:29: error: 'stdout' was not declared in this scope
freopen("PIXEL.OUT","w",stdout);
^
src.cpp:9:5: error: 'cin' was not declared in this scope
cin>>n;
^
src.cpp:19:9: error: 'cout' was not declared in this scope
cout<<d<<endl;
^
src.cpp:19:18: error: 'endl' was not declared in this scope
cout<<d<<endl;
^