Compilare: user.cpp: In function ‘int dijkstra()’: user.cpp:26:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘void flux()’: user.cpp:44:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[D].size();i++) ^ user.cpp:41:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,f,cost,minim,r=0; ^ user.cpp: In function ‘int main()’: user.cpp:77:17: warning: unused variable ‘j’ [-Wunused-variable] int a,b,c,i,j,p; ^