Compilare: user.cpp: In function ‘void dijekstra(int)’: user.cpp:24:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int y=0;y<v[nod].size();y++) ^ user.cpp: In function ‘int main()’: user.cpp:45:15: warning: unused variable ‘nod’ [-Wunused-variable] int n,m,k,nod,cost,c,x,y; ^ user.cpp:45:19: warning: unused variable ‘cost’ [-Wunused-variable] int n,m,k,nod,cost,c,x,y; ^