Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:40:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[a.nod].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:84:15: warning: unused variable 'j' [-Wunused-variable] int x, i, j, k, y, z, c, m; ^ main.cpp:85:10: warning: unused variable 'a' [-Wunused-variable] graf a, b; ^