Compilare: main.cpp: In function 'int darb(int, const std::vector<std::vector<int> >&)': main.cpp:38:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int j = 1; j < dist[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~ main.cpp:43:12: warning: 'nx' may be used uninitialized [-Wmaybe-uninitialized] 43 | return nx; | ^~ main.cpp:11:9: note: 'nx' was declared here 11 | int nx; | ^~