
DescriptionBeingwellknownforitshighlyinnovativeproducts,Merckwoulddefinitelybeagoodtargetforindustrialespionage.Toprotectitsbrand-newresearchanddevelopmentfacilitythecompanyhasinstalledthelatestsystemofsurveillancerobotspatrollingthearea.Theserobotsmovealongthewallsofthefacilityandreportsuspiciousobservationstothecentralsecurityoffice.Theonlyflawinthesystemacompetitor抯agentcouldfindisthefac...

DescriptionA latticepoint isanorderedpair(x, y)where x and y arebothintegers.Giventhecoordinatesoftheverticesofatriangle(whichhappentobelatticepoints),youaretocountthenumberoflatticepointswhichliecompletelyinsideofthetriangle(pointsontheedgesorverticesofthetriangledonotcount).InputTheinputtestfilewillcontainmultipletestcases.Eachinputtestcaseconsistsofsixintegers x1, y1, x2, y2, ...

DescriptionYouaregoingtocomputetheareaofaspecialkindofpolygon.Onevertexofthepolygonistheoriginoftheorthogonalcoordinatesystem.Fromthisvertex,youmaygostepbysteptothefollowingvertexesofthepolygonuntilbacktotheinitialvertex.ForeachstepyoumaygoNorth,West,SouthorEastwithsteplengthof1unit,orgoNorthwest,Northeast,SouthwestorSoutheastwithsteplengthofsquarerootof2.Forexample,thisisalegalpolyg...

DescriptionTheGXLightPipelineCompanystartedtopreparebentpipesforthenewtransgalacticlightpipeline.Duringthedesignphaseofthenewpipeshapethecompanyranintotheproblemofdetermininghowfarthelightcanreachinsideeachcomponentofthepipe.Notethatthematerialwhichthepipeismadefromisnottransparentandnotlightreflecting.Eachpipecomponentconsistsofmanystraightpipesconnectedtightlytogether.Fortheprogrammin...

DescriptionIt'srainingoutside.FarmerJohnson'sbullBenwantssomeraintowaterhisflowers.Bennailstwowoodenboardsonthewallofhisbarn.Showninthepicturesbelow,thetwoboardsonthewalljustlookliketwosegmentsontheplane,astheyhavethesamewidth.Yourmissionistocalculatehowmuchrainthesetwoboardscancollect.InputThefirstlinecontainsthenumberoftestcases.Eachtestcaseconsistsof8integersnotexceeding10,000byabsol...

DescriptionYouaretowriteaprogramthathastodecidewhetheragivenlinesegmentintersectsagivenrectangle.Anexample:line:startpoint:(4,9)endpoint:(11,2)rectangle:left-top:(1,5)right-bottom:(7,1)Figure1:LinesegmentdoesnotintersectrectangleThelineissaidtointersecttherectangleifthelineandtherectanglehaveatleastonepointincommon.Therectangleconsistsoffourstraightlinesandtheareainbetween.Althoughallinput...

DescriptionArcheologistsfromtheAntiquitiesandCuriosMuseum(ACM)haveflowntoEgypttoexaminethegreatpyramidofKey-Ops.Usingstate-of-the-arttechnologytheyareabletodeterminethatthelowerfloorofthepyramidisconstructedfromaseriesofstraightlinewalls,whichintersecttoformnumerousenclosedchambers.Currently,nodoorsexisttoallowaccesstoanychamber.Thisstate-of-the-arttechnologyhasalsopinpointedthelocat...

DescriptionYouaretofindthelengthoftheshortestpaththroughachambercontainingobstructingwalls.Thechamberwillalwayshavesidesatx=0,x=10,y=0,andy=10.Theinitialandfinalpointsofthepatharealways(0,5)and(10,5).Therewillalsobefrom0to18verticalwallsinsidethechamber,eachwithtwodoorways.Thefigurebelowillustratessuchachamberandalsoshowsthepathofminimallength.InputTheinputdatafortheillustratedchamberwould...
![「BZOJ1646」[Usaco2007 Open] Catch That Cow 抓住那只牛](http://hzwer.com/wp-content/themes/ly/image/image_post/2014-12-10_11-12-48.jpg)
DescriptionFarmerJohnhasbeeninformedofthelocationofafugitivecowandwantstocatchherimmediately.HestartsatapointN(0<=N<=100,000)onanumberlineandthecowisatapointK(0<=K<=100,000)onthesamenumberline.FarmerJohnhastwomodesoftransportation:walkingandteleporting.*Walking:FJcanmovefromanypointXtothepointsX-1orX+1inasingleminute*Teleporting:FJcanmovefromanypointXtothepoint2*Xi...
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