In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::distance(unsigned int, unsigned int)':
/in/shortestP2P.hpp:88:15: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits]
         if (A < 0) {
             ~~^~~
cc1plus: all warnings being treated as errors