In file included from /in/driver/main.cpp:1:0:
/in/shortestP2P.hpp: In member function 'void ShortestP2P::readGraph()':
/in/shortestP2P.hpp:31:27: error: conversion to 'int' from 'size_t {aka long unsigned int}' may alter its value [-Werror=conversion]
         if (!Floyd(dist, X)) {
                           ^
cc1plus: all warnings being treated as errors