Compilare: main.cpp: In member function 'void Graph::print_solution(std::vector<int>, int)': main.cpp:258:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 258 | for(int i = start; i < solution.size(); i ++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::BFS(int)': main.cpp:284:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 284 | for(i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::DFS(int)': main.cpp:301:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 301 | 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:314:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 314 | for(int i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::biconnected()': main.cpp:404:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 404 | 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:417:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 417 | for(int j = 0; j < reversed[curr].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::strongly_connected()': main.cpp:467:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 467 | for(i = 0; i < solution.size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:469:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 469 | 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:480:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 480 | 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:554:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 554 | for(i = 0; i < edges[curr].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::bridges()': main.cpp:588:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 588 | for(int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In member function 'void Graph::kruskal()': main.cpp:615:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 615 | for(i = 0; i < solution.size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::bellman_ford()': main.cpp:637:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 637 | for(j = 0; j < weightedNeighbours[u].size(); j++)