Compilare: main.cpp: In function 'void DFS(int)': main.cpp:13:19: 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<ad[nod].size(); i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:29:17: warning: unused variable 'j' [-Wunused-variable] 29 | int t,n,m,i,j,a,b; | ^ main.cpp:29:19: warning: unused variable 'a' [-Wunused-variable] 29 | int t,n,m,i,j,a,b; | ^ main.cpp:29:21: warning: unused variable 'b' [-Wunused-variable] 29 | int t,n,m,i,j,a,b; | ^