Compilare: main.cpp: In constructor 'Graf::Graf(int, int, int, std::vector<std::vector<int> >)': main.cpp:41:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::ostream& operator<<(std::ostream&, const Graf&)': main.cpp:125:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 125 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:137:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 137 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void leetcode_criticalCon()': main.cpp:234:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 234 | for (int i = 0; i < solutie.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void infoarena_ctc()': main.cpp:262:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 262 | for (int j = 0; j < solutie[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void infoarena_biconex()': main.cpp:318:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 318 | for (int j = 0; j < solutie[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void infoarena_disjoint()': main.cpp:377:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 377 | for (int i = 0; i < solutie.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graf::BFS(int)': main.cpp:462:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 462 | for (int i = 0; i < lista_vecini[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::DFS(int, std::vector<int>&)': main.cpp:480:27: 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 < lista_vecini[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs_muchiiIntoarcere(int, std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<std::vector<int> >&)': main.cpp:533:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 533 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs_tare_conex(int, std::vector<int>&, std::vector<int>&, std::vector<int>&, int&, std::stack<int>&, int&, std::vector<std::vector<int> >&)': main.cpp:567:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 567 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs_sortare(int, std::vector<int>&, std::vector<int>&)': main.cpp:607:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 607 | for (int i = 0; i < lista_vecini[nod_curent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf::dfs_biconex(int, int&, std::vector<int>&, std::vector<int>&, std::vector<int>&, std::stack<std::pair<int, int> >&, int&, std::vector<std::vector<std::pair<int, int> > >&)': main.cpp:628:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 628 | for (int j = 0; j < lista_vecini[i].size(); j++) {