Compilare: main.cpp: In member function 'std::vector<int> Graph::apm(int&)': main.cpp:113:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for(int j =0; j < neighbors[next_node].size(); j++){ | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:140:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 140 | for(int i =0; i < aux.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graph::apm(int&)': main.cpp:116:52: warning: 'next_node' may be used uninitialized in this function [-Wmaybe-uninitialized] 116 | parents[ neighbors[next_node][j] ] = next_node;