Compilare: main.cpp: In function 'void dijkstra()': main.cpp:64:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<varf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(j=0; j<G[vfmin].size(); j++) | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void afisare()': main.cpp:81:12: warning: unused variable 'j' [-Wunused-variable] 81 | int i, j; | ^