Compilare: main.cpp: In function 'void dfs(int, int, int)': main.cpp:64:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (int i=0; i<v[nod].size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfs_lant(int, int)': main.cpp:89:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for (int i=0; i<v[nod].size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp:104:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | for (int i=0; i<noduri.size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:132:21: warning: unused variable 'ok' [-Wunused-variable] 132 | int ok=1; | ^~