In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::readGraph()':
/in/shortestP2P.hpp:60:54: error: 'K' was not declared in this scope
                     if (graph[j][i]!=INF && graph[j][K]!=INF && graph[j][i] + graph[i][k] < graph[j][k])
                                                      ^