Compilare: main.cpp: In function 'int main()': main.cpp:60:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for (i=0; i<graf[nod].size(); i++) { | ~^~~~~~~~~~~~~~~~~ main.cpp:24:32: warning: unused variable 'k' [-Wunused-variable] 24 | long long int t, tt, n, m, k, i, a, b, nod, nou, nr, maxi; | ^ main.cpp:24:54: warning: unused variable 'nr' [-Wunused-variable] 24 | long long int t, tt, n, m, k, i, a, b, nod, nou, nr, maxi; | ^~ main.cpp:24:58: warning: 'maxi' may be used uninitialized [-Wmaybe-uninitialized] 24 | long long int t, tt, n, m, k, i, a, b, nod, nou, nr, maxi; | ^~~~