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:66:13: error: variable 'use' set but not used [-Werror=unused-but-set-variable]
         int use=A+B;
             ^~~
cc1plus: all warnings being treated as errors