In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::spfa(int, int, std::vector<int>&)':
/in/shortestP2P.hpp:79:35: error: unused parameter 'B' [-Werror=unused-parameter]
 void ShortestP2P::spfa(int A, int B, vector<int>& dist) {
                                   ^
cc1plus: all warnings being treated as errors