• 「BZOJ1033」[ZJOI2008] 杀蚂蚁antbuster

    「BZOJ1033」[ZJOI2008] 杀蚂蚁antbuster

    Description最近,佳佳迷上了一款好玩的小游戏:antbuster。游戏规则非常简单:在一张地图上,左上角是蚂蚁窝,右下角是蛋糕,蚂蚁会源源不断地从窝里爬出来,试图把蛋糕搬回蚂蚁窝。而你的任务,就是用原始资金以及杀蚂蚁获得的奖金造防御塔,杀掉这些试图跟你抢蛋糕的蚂蚁~下附一张游戏截图: 为了拿到尽可能高的分数,佳佳设计了很多种造塔的方案,但在尝试了其中的一小部分后,佳佳发现,这个游戏实在是太费时间了。为了节省...

    32014年4月21日7,891模拟
  • 「CF413B」Spyke Chatting

    「CF413B」Spyke Chatting

    TheR2companyhas n employeesworkingforit.Theworkinvolvesconstantexchangeofideas,sharingthestoriesofsuccessandupcomingchallenging.Forthat,R2usesafamousinstantmessagingprogramSpyke.R2has m Spykechatsjusttodiscussallsortsofissues.Ineachchat,somegroupofemployeesexchangesmessagesdaily.Anemployeecansimultaneouslytalkinmultiplechats.Ifsomeemployeeisinthe k-thchat,hecanwritemessagestothisch...

    02014年4月20日3,203模拟
  • 「CF413A」Data Recovery

    「CF413A」Data Recovery

    NotsolongagocompanyR2boughtcompanyR1andconsequently,allitsdevelopmentsinthefieldofmulticoreprocessors.NowtheR2laboratoryistestingoneoftheR1processors.Thetestinggoesin n steps,ateachsteptheprocessorgetssomeinstructions,andthenitstemperatureismeasured.TheheadengineerinR2iskeepingareportrecordontheworkoftheprocessor:hewritesdowntheminimumandthemaximummeasuredtemperatureinhisnotebook.Hisas...

    02014年4月20日2,334模拟
  • 「CF412E」E – mail Addresses

    「CF412E」E - mail Addresses

    OneofthemostimportantproductsoftheR1companyisapopular@r1.commailservice.TheR1mailboxesreceiveandsendmillionsofemailseveryday.Today,theonlinenewsthunderedwithterribleinformation.TheR1databasecrashedandalmostnodatacouldbesavedexceptforonebigstring.ThedevelopersassumethatthestringcontainsthelettersofsomeusersoftheR1mail.Recoveringlettersisatediousmostlymanualwork.Sobeforeyoustartthisproces...

    02014年4月19日2,636模拟
  • 「CF412C」Pattern

    「CF412C」Pattern

    Developersoftenfacewithregularexpressionpatterns.Apatternisusuallydefinedasastringconsistingofcharactersandmetacharactersthatsetstherulesforyoursearch.Thesepatternsaremostoftenusedtocheckwhetheraparticularstringmeetsthecertainrules.Inthistask,apatternwillbeastringconsistingofsmallEnglishlettersandquestionmarks('?').Thequestionmarkinthepatternisametacharacterthatdenotesanarbitrarysmalllettero...

    02014年4月19日2,028模拟
  • 「CF412B」Network Configuration

    「CF412B」Network Configuration

    TheR1companywantstoholdawebsearchchampionship.Therewere n computersgivenforthecompetition,eachofthemisconnectedtotheInternet.Theorganizersbelievethatthedatatransferspeeddirectlyaffectstheresult.ThehigherthespeedoftheInternetis,thefastertheparticipantwillfindthenecessaryinformation.Therefore,beforethecompetitionstarted,eachcomputerhaditsmaximumpossibledatatransferspeedmeasured.Onthe i-t...

    02014年4月19日2,248模拟
  • 「CF412A」Poster

    「CF412A」Poster

    TheR1companyhasrecentlyboughtahighrisebuildinginthecentreofMoscowforitsmainoffice.It'stimetodecoratethenewoffice,andthefirstthingtodoistowritethecompany'ssloganabovethemainentrancetothebuilding.Thesloganofthecompanyconsistsof n characters,sothedecoratorshungalargebanner, n meterswideand 1 meterhigh,dividedinto n equalsquares.Thefirstcharacterofthesloganmustbeinthefirstsquare(theleftm...

    02014年4月19日2,104模拟
  • 「CF417C」Football

    「CF417C」Football

    Oneday,atthe"RussianCodeCup"eventitwasdecidedtoplayfootballasanoutofcompetitionevent.Allparticipantswasdividedinto n teamsandplayedseveralmatches,twoteamscouldnotplayagainsteachothermorethanonce.TheappointedJudgewasthemostexperiencedmember—Pavel.Butsincehewasthewisestofall,hesoongotboredofthegameandfellasleep.Wakingup,hediscoveredthatthetournamentisoverandtheteamswanttoknowtheresultso...

    02014年4月19日2,229模拟
  • 「CF417B」Crash

    「CF417B」Crash

    Duringthe"RussianCodeCup"programmingcompetition,thetestingsystemstoresallsentsolutionsforeachparticipant.Weknowthatmanyparticipantsuserandomnumbersintheirprogramsandareoftensentseveralsolutionswiththesamesourcecodetocheck.Eachparticipantisidentifiedbysomeuniquepositiveinteger k,andeachsentsolution A ischaracterizedbytwonumbers: x —thenumberofdifferentsolutionsthataresentbeforethefirst...

    02014年4月19日1,899模拟
  • 「BZOJ1621」[Usaco2008 Open] Roads Around The Farm分岔路口

    「BZOJ1621」[Usaco2008 Open] Roads Around The Farm分岔路口

    Description    约翰的N(1≤N≤1,000,000,000)只奶牛要出发去探索牧场四周的土地.她们将沿着一条路走,一直走到三岔路口(可以认为所有的路口都是这样的).这时候,这一群奶牛可能会分成两群,分别沿着接下来的两条路继续走.如果她们再次走到三岔路口,那么仍有可能继续分裂成两群继续走.    奶牛的分裂方式十分古怪:如果这一群奶牛可以精确地分成两部分,这两部分的牛数恰好相差K(1≤K≤1000),那么在三岔路口牛...

    02014年4月15日2,223模拟
  • 「CF415A」Mashmokh and Lights

    「CF415A」Mashmokh and Lights

    Mashmokhworksinafactory.Attheendofeachdayhemustturnoffallofthelights.Thelightsonthefactoryareindexedfrom 1 to n.Thereare n buttonsinMashmokh'sroomindexedfrom 1 to n aswell.IfMashmokhpushesbuttonwithindex i,theneachlightwithindexnotlessthani thatisstillturnedonturnsoff.Mashmokhisnotveryclever.Soinsteadofpushingthefirstbuttonhepushessomeofthebuttonsrandomlyeachnight.Hepushed m ...

    02014年4月7日1,909模拟
  • 「BZOJ1620」[Usaco2008 Nov] Time Management 时间管理

    「BZOJ1620」[Usaco2008 Nov] Time Management 时间管理

    DescriptionEverthematuringbusinessman,FarmerJohnrealizesthathemustmanagehistimeeffectively.HehasNjobsconvenientlynumbered1..N(1<=N<=1,000)toaccomplish(likemilkingthecows,cleaningthebarn,mendingthefences,andsoon).Tomanagehistimeeffectively,hehascreatedalistofthejobsthatmustbefinished.JobirequiresacertainamountoftimeT_i(1<=T_i<=1,000)tocompleteandfurthermoremustbefinishedbyti...

    02014年4月5日2,867模拟
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