Compilare: main.cpp: In constructor 'Graf_orientat::Graf_orientat(int, int, std::vector<std::vector<int> >)': main.cpp:33:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:34:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int j = 0; j < Lista_de_adiacenta[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'virtual void Graf_orientat::afisare(std::ostream&)': main.cpp:61:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:62:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for (int j = 0; j < Lista_de_adiacenta[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graf_orientat::BFS(int)': main.cpp:93:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | for (int i = 0; i < Lista_de_adiacenta[primul_nod_din_coada].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In constructor 'Graf_neorientat::Graf_neorientat(int, int, std::vector<std::vector<int> >)': main.cpp:129:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 129 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:130:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for (int j = 0; j < Lista_de_adiacenta[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'virtual void Graf_neorientat::afisare(std::ostream&)': main.cpp:164:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 164 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:165:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 165 | for (int j = 0; j < Lista_de_adiacenta[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graf_neorientat::DFS(int, std::vector<int>&)': main.cpp:191:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 191 | for (int i = 0; i < Lista_de_adiacenta[Nod_start].size(); i++)///parcurgem vecinii nodului | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void BFS_infoarena()': main.cpp:235:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 235 | for (int i = 1; i < Distante.size(); i++) | ~~^~~~~~~~~~~~~~~~~