Compilare: main.cpp: In function 'void BF(int, int)': main.cpp:63:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for(int i=0;i<G[x].size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'void Dijkstra(int, int)': main.cpp:87:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for(int i=0;i<G[nod].size();i++){ | ~^~~~~~~~~~~~~~ main.cpp:84:26: warning: unused variable 'cost' [-Wunused-variable] 84 | int nod=p.second,cost=-p.first; | ^~~~