Compilare: main.cpp: In constructor 'Graf::Graf(int, int, int, std::vector<std::vector<int> >)': main.cpp:42:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (int j = 0; j < lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::ostream& operator<<(std::ostream&, const Graf&)': main.cpp:139:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 139 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:151:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 151 | for (int j = 0; j < g.lista_vecini[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void leetcode_criticalCon()': main.cpp:248:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 248 | for (int i = 0; i < solutie.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void infoarena_ctc()': main.cpp:276:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 276 | for (int j = 0; j < solutie[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void infoarena_biconex()': main.cpp:332:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 332 | for (int j = 0; j < solutie[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void infoarena_disjoint()': main.cpp:391:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 391 | for (int i = 0; i < solutie.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void infoarena_euler()': main.cpp:541:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 541 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'void infoarena_bipartit()': main.cpp:590:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 590 | for (int i = 0; i < sol.size() - 1; i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graf::BFS(int)': main.cpp:617:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 617 | 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:635:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 635 | 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:688:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 688 | 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:722:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 722 | for (int j = 0; j < lista_vecini[i].size(); j++)