Compilare: main.cpp: In function 'std::vector<int> dijkstra(std::vector<std::pair<int, int> >*, int)': main.cpp:49:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int j= 0; j<muchia[m].size(); j++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int dist_min()': main.cpp:29:12: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] 29 | return poz; | ^~~ main.cpp: In function 'std::vector<int> dijkstra(std::vector<std::pair<int, int> >*, int)': main.cpp:47:14: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] 47 | viz[m]=1; | ^