Compilare: user.cpp: In function ‘int main()’: user.cpp:42:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int q = 0; q < h[ind].size (); q++) ^ user.cpp:53:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (q = 0; q < h[ind].size (); q++) ^ user.cpp:60:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (q == h[ind].size ()) h[ind].pb ( mp(nr, 1) ); ^ user.cpp:64:24: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf ("%d\n", sol); ^