Youaregivenann × mrectangulartableconsistingoflowercaseEnglishletters.Inoneoperationyoucancompletelyremoveonecolumnfromthetable.Theremainingpartsarecombinedforminganewtable.Forexample,afterremovingthesecondcolumnfromthetable[crayon-6769772e287a6042389334/]weobtainthetable:[crayon-6769772e287b5887902838/]Atableiscalledgoodifitsrowsareorderedfromtoptobottomlexicographically,i.e.eachrowislex...
Description给定一棵n个点的带权树,求树上最长的异或和路径InputTheinputcontainsseveraltestcases.Thefirstlineofeachtestcasecontainsanintegern(1<=n<=100000),Thefollowingn-1lineseachcontainsthreeintegersu(0<=u<n),v(0<=v<n),w(0<=w<2^31),whichmeansthereisanedgebetweennodeuandvoflengthw.OutputForeachtestcaseoutputthexor-lengthofthexor-longestpath.SampleInput4123234246Samp...
Malekhasrecentlyfoundatreasuremap.Whilehewaslookingforatreasurehefoundalockeddoor.Therewasastringswrittenonthedoorconsistingofcharacters'(',')'and'#'.Belowtherewasamanualonhowtoopenthedoor.AfterspendingalongtimeMalekmanagedtodecodethemanualandfoundoutthatthegoalistoreplaceeach'#'withoneormore')'characterssothatthefinalstringbecomesbeautiful.Belowtherewasalsowrittenthatastringiscalledbeautif...
Vasyafollowsabasketballgameandmarksthedistancesfromwhicheachteammakesathrow.Heknowsthateachsuccessfulthrowhasvalueofeither2or3points.Athrowisworth2pointsifthedistanceitwasmadefromdoesn'texceedsomevalueofdmeters,andathrowisworth3pointsifthedistanceislargerthandmeters,wheredissomenon-negativeinteger.Vasyawouldliketheadvantageofthepointsscoredbythefirstteam(thepointsofthefirstteamminusthepointsof...
Vasyahasbecomeinterestedinwrestling.Inwrestlingwrestlersusetechniquesforwhichtheyareawardedpointsbyjudges.Thewrestlerwhogetsthemostpointswins.Whenthenumbersofpointsofbothwrestlersareequal,thewrestlerwhosesequenceofpointsislexicographicallygreater,wins.Ifthesequencesoftheawardedpointscoincide,thewrestlerwhoperformedthelasttechniquewins.Yourtaskistodeterminewhichwrestlerwon.InputThefirstline...
近期评论