Compilare: main.cpp: In member function 'void Graph::print_array(std::vector<int>, int)': main.cpp:257:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 257 | for(int i = start; i < solution.size(); i ++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::BFS(int)': main.cpp:283:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 283 | for(i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::DFS(int)': main.cpp:300:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 300 | for(int i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::biconnected_utility(int, std::stack<int>&, std::vector<int>&, std::vector<std::vector<int> >&, int&)': main.cpp:313:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 313 | for(int i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::biconnected()': main.cpp:403:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 403 | for (int j = 0; j < solution[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::DFS_kosaraju(int, std::vector<std::vector<int> >&, std::vector<int>&)': main.cpp:416:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 416 | for(int j = 0; j < reversed[curr].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::strongly_connected()': main.cpp:466:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 466 | for(i = 0; i < solution.size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:468:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 468 | for(int j = 0; j < solution[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::top_sort_utility(int, std::stack<int>&)': main.cpp:479:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 479 | for(int i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::critical(int, int, std::vector<std::vector<int> >&, std::vector<int>&)': main.cpp:553:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 553 | for(i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::bridges()': main.cpp:587:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 587 | for(int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In member function 'void Graph::kruskal()': main.cpp:614:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 614 | for(i = 0; i < solution.size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::dijkstra(int)': main.cpp:642:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 642 | for(i = 0; i < weightedNeighbours[x].size(); i++)