ShusekiKingdomistheworld'sleadingnationforinnovationandtechnology.Therearencitiesinthekingdom,numberedfrom1ton.ThankstoMr.Kitayuta'sresearch,ithasfinallybecomepossibletoconstructteleportationpipesbetweentwocities.Ateleportationpipewillconnecttwocitiesunidirectionally,thatis,ateleportationpipefromcityxtocityycannotbeusedtotravelfromcityytocityx.Thetransportationwithineachcityisextremelydeve...
Celebratingthenewyear,manypeoplepostvideosoffallingdominoes;Here'salistofthem:https://www.youtube.com/results?search_query=New+Years+DominosUserainta,wholivesina2Dworld,isgoingtopostavideoaswell.Therearendominoesona2DCartesianplane.i-thdomino(1 ≤ i ≤ n)canberepresentedasalinesegmentwhichisparalleltothey-axisandwhoselengthisli.Thelowerpointofthedominoisonthex-axis.Let'sdenotethex-...
Useraintahasapermutationp1, p2, ..., pn.AstheNewYeariscoming,hewantstomakehispermutationasprettyaspossible.Permutationa1, a2, ..., anisprettierthanpermutationb1, b2, ..., bn,ifandonlyifthereexistsanintegerk(1 ≤ k ≤ n)wherea1 = b1, a2 = b2, ..., ak - 1 = bk - 1andak < bkallholds.Asknown,permutationpissosensitivethatitcouldbeonlymodifiedbyswappingtwodistinctele...
Allsubmissionsforthisproblemareavailable.Readproblemsstatementsin MandarinChinese and Russian.Chefhasanintegersequence a1, a2,..., aN ofsize N,wherealltheelementsofthesequenceare 0initially.Chefalsohas M segments,herethe ith oneis [Li,Ri].Hewantstocreatenewsequencesusingthefollowingoperation:Inasingleoperation,hepicksasegmentfromthe M segments.Letthechosensegmentbe ...
近期评论