/in/shortestP2P.cc: In member function 'void ShortestP2P::readGraph()':
/in/shortestP2P.cc:32:17: error: 'remove_all' was not declared in this scope
                 remove_all();
                 ^~~~~~~~~~
/in/shortestP2P.cc:32:17: note: suggested alternative: 'remove'
                 remove_all();
                 ^~~~~~~~~~
                 remove