![「BZOJ1674」[Usaco2005] Part Acquisition](http://hzwer.com/wp-content/themes/ly/image/image_post/2014-12-10_11-26-13.jpg)
DescriptionThecowshavebeensentonamissionthroughspacetoacquireanewmilkingmachinefortheirbarn.TheyareflyingthroughaclusterofstarscontainingN(1<=N<=50,000)planets,eachwithatradingpost.ThecowshavedeterminedwhichofK(1<=K<=1,000)typesofobjects(numbered1..K)eachplanetintheclusterdesires,andwhichproductstheyhavetotrade.Noplanethasdevelopedcurrency,sotheyworkunderthebartersystem:alltr...

PrincessTwilightwenttoCelestiaandLuna'soldcastletoresearchthechestfromtheElementsofHarmony.Asequenceofpositiveintegers bi isharmonyifandonlyifforeverytwoelementsofthesequencetheirgreatestcommondivisorequals1.Accordingtoanancientbook,thekeyofthechestisaharmonysequence bi whichminimizesthefollowingexpression:Youaregivensequence ai,helpPrincessTwilighttofindthekey.InputThefirstlinec...

TwilightSparklewasplayingLudowithherfriendsRainbowDash,AppleJackandFlutterShy.Butshekeptlosing.Havingreturnedtothecastle,TwilightSparklebecameinterestedinthedicethatwereusedinthegame.Thedicehas m faces:thefirstfaceofthedicecontainsadot,thesecondonecontainstwodots,andsoon,the m-thfacecontains m dots.TwilightSparkleissurethatwhenthediceistossed,eachfaceappearswithprobability .A...

Oneday,TwilightSparkleisinterestedinhowtosortasequenceofintegers a1, a2, ..., an innon-decreasingorder.Beingayoungunicorn,theonlyoperationshecanperformisaunitshift.Thatis,shecanmovethelastelementofthesequencetoitsbeginning:a1, a2, ..., an → an, a1, a2, ..., an - 1.HelpTwilightSparkletocalculate:whatistheminimumnumberofoperationsthatsheneedstosortthesequence?InputThefirst...

TwilightSparkleoncegotacrystalfromtheCrystalMine.Acrystalofsize n (n isodd; n > 1)isan n × n matrixwithadiamondinscribedintoit.Youaregivenanoddinteger n.Youneedtodrawacrystalofsize n.Thediamondcellsofthematrixshouldberepresentedbycharacter"D".Allothercellsofthematrixshouldberepresentedbycharacter"*".Lookattheexamplestounderstandwhatyouneedtodraw.InputTheonlylinecontain...
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