Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:57:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<varf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(i=0; i<G[vfmin].size(); i++) | ~^~~~~~~~~~~~~~~~ main.cpp:37:11: warning: unused variable 'j' [-Wunused-variable] 37 | int i,j,vecin,cost,vfmin,minim; | ^ main.cpp:37:30: warning: variable 'minim' set but not used [-Wunused-but-set-variable] 37 | int i,j,vecin,cost,vfmin,minim; | ^~~~~