Compilare: main.cpp: In member function 'void Graf::functie1(std::vector<int>*, std::vector<std::vector<int> >&)': main.cpp:113:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for(int i = 0; i < connections.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graf::dijkstra2(int)': main.cpp:186:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 186 | for(int i = 1; i < lista_adiacenta2[b].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graf::bellman_ford2(int)': main.cpp:222:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 222 | for(int i = 1; i < lista_adiacenta2[b].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::bfs(int)': main.cpp:309:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 309 | 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:362:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 362 | for(int i = 0; i < lista_adiacenta[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::parcurgere(std::vector<std::vector<int> >&)': main.cpp:417:26: 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 < componenta[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs1(int, std::unordered_map<int, bool>&, std::vector<int>&)': main.cpp:429:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 429 | 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, std::vector<std::vector<int> >&, std::vector<std::vector<int> >&)': main.cpp:443:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 443 | for(int i = 0; i < lista_adiacenta1[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::havel_hakimi()': main.cpp:477:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 477 | if(grade.size() < x) | ~~~~~~~~~~~~~^~~ main.cpp: In member function 'void Graf::functie(int, int*, std::stack<int>&)': main.cpp:543:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 543 | for(int i = 0; i < lista_adiacenta[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Graf::max_flow(std::vector<std::vector<std::pair<int, int> > >, int, int, int)': main.cpp:593:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 593 | for(int j = 0; j < lista_adiacenta[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::citire_leetcode()': main.cpp:723:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 723 | for(int i = 0; i < rezultat.size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:725:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 725 | for(int j = 0; j < rezultat[i].size(); j++)