Compilare: main.cpp: In constructor 'Graf_orientat::Graf_orientat(int, int, std::vector<std::vector<int> >)': main.cpp:49:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:50:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | 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:77:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:78:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | 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:109:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | 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:144:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 144 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:145:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 145 | 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:179:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 179 | for (int i = 1; i < Lista_de_adiacenta.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:180:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 180 | 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:206:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 206 | for (int i = 0; i < Lista_de_adiacenta[Nod_start].size(); i++)///parcurgem vecinii nodului | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void BFS_infoarena()': main.cpp:250:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 250 | for (int i = 1; i < Distante.size(); i++) | ~~^~~~~~~~~~~~~~~~~