Compilare: user.cpp: In function ‘void dfs(int, short int*, std::vector<short int>*, bool)’: user.cpp:50:28: 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:73:28: 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:100:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<LA[u].size(); ++i) { ^ user.cpp:153:6: warning: unused variable ‘flow’ [-Wunused-variable] int flow = 0; ^