poj 3468 A Simple Problem with Integers (线段树区间更新入门)
ASimpleProblemwithIntegersTimeLimit: 5000MS MemoryLimit: 131072KTotalSubmissions: 70442 Accepted: 21723CaseTimeLimit: 2000MSDescriptionYouhave N integers, A1, A2,..., AN.Youneedtodealwithtwokindsofope