Compilare: main.cpp: In member function 'char InParser::get_char()': main.cpp:18:33: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 18 | if(buffer_index == SIZE) | ~~~~~~~~~~~~~^~~~~~~ main.cpp: In function 'void BFS(const std::vector<std::vector<int> >&, std::vector<unsigned char>&, int, int)': main.cpp:171:27: warning: unused variable 'target_len' [-Wunused-variable] 171 | const std::size_t target_len = paths_vec[0].size(); | ^~~~~~~~~~