Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i = 0; i < G[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void stergere()': main.cpp:37:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for (int i = 0; i < frunze.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for (int j = 0; j < G[frunze[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (int i = 0; i < frunze.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:52:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int j = 0; j < G[frunze[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:97:20: warning: the address of 'bool formaCorecta()' will never be NULL [-Waddress] 97 | else cout<<formaCorecta<<'\n'; | ^~~~~~~~~~~~