In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::readGraph()':
/in/shortestP2P.hpp:53:23: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     for (int i = 0; i < nodeNum; i++) {
                     ~~^~~~~~~~~
/in/shortestP2P.hpp:54:25: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
       for (int j = 0; j < nodeNum; j++) {
                       ~~^~~~~~~~~
/in/shortestP2P.hpp: In member function 'void ShortestP2P::shortest_path()':
/in/shortestP2P.hpp:85:23: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     for (int k = 0; k < nodeNum; k++) {
                     ~~^~~~~~~~~
/in/shortestP2P.hpp:86:25: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
       for (int i = 0; i < nodeNum; i++) {
                       ~~^~~~~~~~~
/in/shortestP2P.hpp:91:27: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
         for (int j = 0; j < nodeNum; j++) {
                         ~~^~~~~~~~~
cc1plus: all warnings being treated as errors