Compilare: main.cpp: In member function 'void Graf::functie1(std::vector<int>*, std::vector<std::vector<int> >&)': main.cpp:114:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 114 | for(int i = 0; i < connections.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graf::dijkstra2(int)': main.cpp:187:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 187 | for(int i = 1; i < lista_adiacenta2[b].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graf::bellman_ford2(int)': main.cpp:223:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 223 | for(int i = 1; i < lista_adiacenta2[b].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::max_flow(std::vector<std::vector<std::pair<int, int> > >, int, int, int)': main.cpp:296:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 296 | for(int j = 0; j < lista_adiacenta[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::citire_leetcode()': main.cpp:426:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 426 | for(int i = 0; i < rezultat.size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:428:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 428 | for(int j = 0; j < rezultat[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::bfs(int)': main.cpp:668:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 668 | for(int i = 0; i < lista_adiacenta[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs(std::vector<int>&, int)': main.cpp:691:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 691 | for(int i = 0; i < lista_adiacenta1[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::havel_hakimi()': main.cpp:744:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 744 | if(grade.size() < x) | ~~~~~~~~~~~~~^~~ main.cpp: In member function 'void Graf::functie(int, int*, std::stack<int>&)': main.cpp:795:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 795 | for(int i = 0; i < lista_adiacenta[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::parcurgere()': main.cpp:825:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 825 | for(int j = 0; j < componenta[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs1(int, std::unordered_map<int, bool>&, std::vector<int>&)': main.cpp:837:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 837 | for(int i = 0; i < lista_adiacenta[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs2(int, std::unordered_map<int, bool>&, std::vector<int>&, int)': main.cpp:850:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 850 | for(int i = 0; i < lista_adiacenta1[nod].size(); i++)