Compilare: main.cpp: In function 'bool bellman()': main.cpp:72:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<varf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(i=0;i<G[x].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'void afisare()': main.cpp:93:12: warning: unused variable 'j' [-Wunused-variable] 93 | int i, j, cnt; | ^ main.cpp:93:15: warning: unused variable 'cnt' [-Wunused-variable] 93 | int i, j, cnt; | ^~~