Compilare: user.cpp: In function ‘void dijkstra(int, int)’: user.cpp:30:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < g[x].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:81:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < sol[i].size(); j++) ^ user.cpp:72:20: warning: ‘xmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] afisare(xmin, 0); ^