In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'bool ShortestP2P::Floyd(std::vector<int>, int)':
/in/shortestP2P.hpp:68:32: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     for (unsigned int k = 0; k < V; k++)
                              ~~^~~
/in/shortestP2P.hpp:70:34: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
       for (unsigned int i = 0; i < V; i++)
                                ~~^~~
/in/shortestP2P.hpp:72:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
         for (unsigned int j = 0; j < V; j++)
                                  ~~^~~
cc1plus: all warnings being treated as errors