Compilare: user.cpp: In function ‘void dijkstra(std::vector<int, std::allocator<int> >*, std::vector<int, std::allocator<int> >*, int, int)’: user.cpp:50: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int poz_min(int*, int, int)’: user.cpp:19: warning: ‘poz’ may be used uninitialized in this function