Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i=0; i< vecini[nod_start].size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:82:5: warning: statement has no effect [-Wunused-value] 82 | nr_conex; | ^~~~~~~~