Compilare: main.cpp:51:21: warning: multi-character character constant [-Wmultichar] 51 | fout << '0 '; | ^~~~ main.cpp: In function 'void dijkstra(int)': main.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (int j = 0; j < v[nc].size(); j++) { | ~~^~~~~~~~~~~~~~ main.cpp:25:13: warning: unused variable 'cnc' [-Wunused-variable] 25 | int cnc = f.first; | ^~~