Compilare: user.cpp: In function ‘Aho* baga(const string&, int)’: user.cpp:44:21: warning: no return statement in function returning non-void [-Wreturn-type] nod->win+= win; } ^ user.cpp: In function ‘void make_fail()’: user.cpp:50:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < bfs.size(); ++i) { ^ user.cpp: In function ‘void compute()’: user.cpp:70:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int nod = 0; nod < bfs.size(); ++nod) if (bfs[nod]->dp[l] >= 0) ^