Compilare: main.cpp: In member function 'bool Graph::isDag()': main.cpp:315:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 315 | return (topo.size()==nodes); | ~~~~~~~~~~~^~~~~~~ main.cpp: In member function 'std::vector<int> Graph::find_cut_vertex()': main.cpp:379:13: warning: unused variable 'contor' [-Wunused-variable] 379 | int contor=0; | ^~~~~~ main.cpp: In function 'int main()': main.cpp:419:13: warning: unused variable 's' [-Wunused-variable] 419 | int n,m,s; | ^