Compilare: user.cpp: In function ‘int dijkstra()’: user.cpp:28:31: 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:47:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[D].size();i++) ^ user.cpp:43:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,f,cost,r=0; ^ user.cpp: In function ‘int main()’: user.cpp:78:17: warning: unused variable ‘j’ [-Wunused-variable] int a,b,c,i,j,p; ^