Compilare: main.cpp: In function 'void dfs1(int, std::vector<int>&, std::stack<int>&, std::vector<std::vector<int> >)': main.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for (int i = 0; i < listaAd[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int, std::vector<int>&, std::vector<std::vector<int> >, std::vector<std::vector<int> >&, std::vector<int>&)': main.cpp:28:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (int i = 0; i < listaTr[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for (int j = 0; j < listaAd[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:73:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (int i = 0; i < rez.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:75:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for (int j = 0; j < rez[i].size(); j++) | ~~^~~~~~~~~~~~~~~