Compilare: main.cpp: In function 'void bfs(int, int)': main.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i<G[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:44:14: warning: unused variable 'x' [-Wunused-variable] int n, m, x, y, c, start, finish, i; ^ main.cpp:44:17: warning: unused variable 'y' [-Wunused-variable] int n, m, x, y, c, start, finish, i; ^ main.cpp:44:20: warning: unused variable 'c' [-Wunused-variable] int n, m, x, y, c, start, finish, i; ^ main.cpp:44:38: warning: unused variable 'i' [-Wunused-variable] int n, m, x, y, c, start, finish, i; ^ main.cpp:45:11: warning: unused variable 'aux' [-Wunused-variable] muchie aux; ^~~