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摘要： Language:Bode PlotTime Limit:1000MSMemory Limit:10000KTotal Submissions:12040Accepted:7721DescriptionConsider the AC circuit below. We will assume that the circuit is in steady-state. Thus, the voltage at nodes 1 and 2 are given by v1= VScoswt and v2= VRcos (wt +q) where VSis the voltage of the sour 阅读全文

摘要： ParencodingsTime Limit:1000MSMemory Limit:10000KTotal Submissions:17819Accepted:10715DescriptionLet S = s1 s2...s2n be a well-formed string of parentheses. S can be encoded in two different ways:q By an integer sequence P = p1 p2...pn where pi is the number of left parentheses before the ith right p 阅读全文

摘要： Web NavigationTime Limit:1000MSMemory Limit:10000KTotal Submissions:27086Accepted:12109DescriptionStandard web browsers contain features to move backward and forward among the pages recently visited. One way to implement these features is to use two stacks to keep track of the pages that can be reac 阅读全文