Run id: 112912

Main.cc:2:17: error: 'ctd' is not a namespace-name
 using namespace ctd;
                 ^
Main.cc:2:20: error: expected namespace-name before ';' token
 using namespace ctd;
                    ^
Main.cc: In function 'int main()':
Main.cc:4:2: error: 'cout' was not declared in this scope
  cout<<"hello,lema";
  ^
Main.cc:4:2: note: suggested alternative:
In file included from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:74:0,
                 from Main.cc:1:
/usr/include/c++/5/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^