Compilare: user.cpp: In function ‘void dfs(int, short int*, std::vector<short int>*, bool)’: user.cpp:51:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<LA[u].size(); ++i) { ^ user.cpp: In function ‘int BFS()’: user.cpp:74:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[u].size(); ++i) { ^ user.cpp: In function ‘void solve()’: user.cpp:101:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<LA[u].size(); ++i) { ^ user.cpp:156:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[Dest].size(); ++i) { ^ user.cpp:188:6: warning: variable ‘sm’ set but not used [-Wunused-but-set-variable] int sm, tm; ^