Compilare: main.cpp: In function 'void dijkstra()': main.cpp:65:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<varf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(j=0; j<G[vfmin].size(); j++) | ~^~~~~~~~~~~~~~~~ main.cpp:54:19: warning: unused variable 'i' [-Wunused-variable] 54 | long long int i, j, minim, vfmin; | ^ main.cpp: In function 'void afisare()': main.cpp:75:22: warning: unused variable 'j' [-Wunused-variable] 75 | long long int i, j, cnt; | ^ main.cpp:75:25: warning: unused variable 'cnt' [-Wunused-variable] 75 | long long int i, j, cnt; | ^~~