Dreamoonhasastringsandapatternstringp.Hefirstremovesexactlyxcharactersfromsobtainingstrings'asaresult.Thenhecalculatesthatisdefinedasthemaximalnumberofnon-overlappingsubstringsequaltopthatcanbefoundins'.Hewantstomakethisnumberasbigaspossible.Moreformally,let'sdefineasmaximumvalueofoveralls'thatcanbeobtainedbyremovingexactlyxcharactersfroms.Dreamoonwantstoknowforallxfrom0to|s|where|s|denotest...
Dreamoonlikestoplaywithsets,integersand.isdefinedasthelargestpositiveintegerthatdividesbothaandb.LetSbeasetofexactlyfourdistinctintegersgreaterthan0.DefineStobeofrankkifandonlyifforallpairsofdistinctelementssi,sjfromS,.Givenkandn,Dreamoonwantstomakeupnsetsofrankkusingintegersfrom1tomsuchthatnointegerisusedintwodifferentsets(ofcourseyoucanleavesomeintegerswithoutuse).Calculatetheminimummth...
Dreamoonlovessummingupsomethingfornoreason.Onedayheobtainstwointegersaandboccasionally.Hewantstocalculatethesumofallniceintegers.Positiveintegerxiscalledniceifand,wherekissomeintegernumberinrange[1, a].Bywedenotethequotientofintegerdivisionofxandy.Bywedenotetheremainderofintegerdivisionofxandy.Youcanreadmoreabouttheseoperationshere:http://goo.gl/AcsXhT.Theanswermaybelarge,sopleaseprint...
近期评论