Compilare: main.cpp: In member function 'int Graph::returnCost(int, int)': main.cpp:39:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<=this->nodesdad.size() - 1;i++) { ~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<std::pair<int, int> > Graph::gasesteVeciniNeorientat(int)': main.cpp:55:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<nodesdad.size();i++ ) { ~^~~~~~~~~~~~~~~~ main.cpp:59:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<nodechildren.size();i++ ) { ~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<std::pair<int, int> > Graph::gasesteVeciniOrientat(int)': main.cpp:68:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<nodesdad.size();i++ ) { ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void Dijkstra(Graph, int)': main.cpp:94:13: warning: unused variable 'min' [-Wunused-variable] int min = 999; ^~~ main.cpp:95:13: warning: unused variable 'index' [-Wunused-variable] int index = -1; ^~~~~ main.cpp: In function 'int main()': main.cpp:119:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=2;i<=graph.nodes.size();i++) { ~^~~~~~~~~~~~~~~~~~~~