In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::bellman_ford(size_t)':
/in/shortestP2P.hpp:91:9: error: 'queue' was not declared in this scope
         queue<size_t> q;
         ^~~~~
/in/shortestP2P.hpp:91:21: error: expected primary-expression before '>' token
         queue<size_t> q;
                     ^
/in/shortestP2P.hpp:91:23: error: 'q' was not declared in this scope
         queue<size_t> q;
                       ^