In this version, each node only updates once. We could do this, because we could see the entire dependency graph, and calculate the optimum route1 through it. If we know the entire graph, we can always calculate the optimum route, but it’s not always a given that we will know the entire graph.
Врач развеяла популярные мифы об отбеливании зубов08:00，这一点在爱思助手中也有详细论述
Bits and Bobbles，更多细节参见手游
Music: Dale North and Terrence O’Brien