/in/foo.cc: In function 'void spreadA(std::vector<Edge*>*, int, int)':
/in/foo.cc:59:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<nodes[startP].size();i++)
              ~^~~~~~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'void spreadB(std::vector<Edge*>*, int, int)':
/in/foo.cc:73:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<nodes[startP].size();i++)
              ~^~~~~~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:118:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<critical.size();i++)
              ~^~~~~~~~~~~~~~~~