Compilare: main.cpp: In function 'int main()': main.cpp:44:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(j=0; j<adj[curr].size(); j++) | ~^~~~~~~~~~~~~~~~~ main.cpp:18:19: warning: unused variable 'l' [-Wunused-variable] 18 | int cer,i,j,k,l,n,m,a,b,curr; | ^