Compilare: main.cpp: In function 'void dijkstra()': main.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<varf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(j=0;j<G[vfmin].size();j++) | ~^~~~~~~~~~~~~~~~ main.cpp:65:31: warning: 'vfmin' may be used uninitialized in this function [-Wmaybe-uninitialized] 65 | nr[x]=nr[vfmin]; | ~~~~~~~~^