Compilare: user.cpp: In function ‘void bellmanford(int, int)’: user.cpp:26:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < g[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:76:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < sol[i].size(); j++) ^ user.cpp:69:21: warning: ‘xmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] afisare(xmin, 2); ^