Compilare: main.cpp: In function 'void bellmanford()': main.cpp:60:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<varf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(i=0; i<G[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp:47:11: warning: unused variable 'k' [-Wunused-variable] 47 | int i,k,vfmin,cost,x; | ^ main.cpp:47:13: warning: unused variable 'vfmin' [-Wunused-variable] 47 | int i,k,vfmin,cost,x; | ^~~~~ main.cpp:47:19: warning: unused variable 'cost' [-Wunused-variable] 47 | int i,k,vfmin,cost,x; | ^~~~