Compilare: user.cpp: In function ‘int main()’: user.cpp:40:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<G[X].size(); ++i) ^ user.cpp:56:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<G[X].size(); ++i) ^ user.cpp:43:23: warning: iteration 99u invokes undefined behavior [-Waggressive-loop-optimizations] D[i]=200000000; ^ user.cpp:42:5: note: containing loop for (int i=1; i<=10000; ++i) ^