Codeforces Round #271 (Div. 2)(dp,线段树good)(很好的一场cf)
很好的一场cfD.FlowersWesawthelittlegameMarmotmadeforMole'slunch.Nowit'sMarmot'sdinnertimeand,asweallknow,Marmoteatsflowers.Ateverydinnerheeatssomeredandwhiteflowers.Thereforeadinnercanberepresentedasaseque