Compilare: main.cpp: In member function 'void Graph::printGraph()': main.cpp:168:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 168 | for(int j = 0; j < adlist[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'Graph Graph::transpose()': main.cpp:247:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 247 | for(j = 0; j < adlist[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::stronglyConnectedComponents()': main.cpp:279:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 279 | for(j = 0; j < comp[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'bool Graph::graphExistsHakimi(std::vector<int>&, int)': main.cpp:318:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 318 | if(degree > dg.size())//check if enough elements are in the list | ~~~~~~~^~~~~~~~~~~ main.cpp:321:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 321 | for(int i = 0; i < dg.size(); ++i) //substract 1 from the following | ~~^~~~~~~~~~~ main.cpp: In member function 'std::vector<std::vector<int> > Graph::criticalConnections(int, std::vector<std::vector<int> >&)': main.cpp:375:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 375 | for(int i = 0; i < connections.size(); ++i)//for each edge | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::biconnectedComponents()': main.cpp:405:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 405 | for(int i = 0; i < biconnected.size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:408:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 408 | for(int j = 0 ; j < comp.size(); ++j) | ~~^~~~~~~~~~~~~ main.cpp: In member function 'void Graph::kruskal()': main.cpp:493:41: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 493 | for(int i = 1; i <= m && sol.size() != n-1; ++i)//for each edge until we choose n-1 | ~~~~~~~~~~~^~~~~~ main.cpp:508:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 508 | for(int i = 0; i < sol.size(); ++i) | ~~^~~~~~~~~~~~ main.cpp: In member function 'void Graph::dijkstra()': main.cpp:563:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 563 | for(int i = 0; i < adj_cost[node].size(); ++i)//for all nodes that "node" is connected to | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::bellmanford()': main.cpp:626:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 626 | for(int i = 0; i < adj_cost[node].size(); ++i) //for each neighbour | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:997:9: warning: unused variable 'i' [-Wunused-variable] 997 | int i, first, n, m; | ^