In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::readGraph()':
/in/shortestP2P.hpp:44:28: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
           for(int i = 0; i < v; i++) {
                          ~~^~~
/in/shortestP2P.hpp:52:28: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
           for(int i = 0; i < e; i++) {
                          ~~^~~
/in/shortestP2P.hpp:56:28: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
           for(int i = 0; i < v; i++) {
                          ~~^~~
/in/shortestP2P.hpp:57:32: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
               for(int j = 0; j < v; j++) {
                              ~~^~~
/in/shortestP2P.hpp:58:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                   for(int k = 0; k < v; k++) {
                                  ~~^~~
cc1plus: all warnings being treated as errors