In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::readGraph()':
/in/shortestP2P.hpp:51:24: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     for (auto i = 0; i < vertex; i++)
                      ~~^~~~~~~~
/in/shortestP2P.hpp:53:26: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
       for (auto j = 0; j < vertex; j++)
                        ~~^~~~~~~~
/in/shortestP2P.hpp:61:24: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     for (auto i = 0; i < edge; i++)
                      ~~^~~~~~
/in/shortestP2P.hpp:67:24: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     for (auto i = 0; i < vertex; i++)
                      ~~^~~~~~~~
/in/shortestP2P.hpp:69:26: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
       for (auto j = 0; j < vertex; j++)
                        ~~^~~~~~~~
/in/shortestP2P.hpp:73:30: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
           for (auto k = 0; k < vertex; k++)
                            ~~^~~~~~~~
cc1plus: all warnings being treated as errors