
DescriptionTherepetitionnumberofastringisdefinedasthemaximumnumberRsuchthatthestringcanbepartitionedintoRsameconsecutivesubstrings.Forexample,therepetitionnumberof"ababab"is3and"ababa"is1.Givenastringcontaininglowercaseletters,youaretofindasubstringofitwithmaximumrepetitionnumber.InputTheinputconsistsofmultipletestcases.Eachtestcasecontainsexactlyoneline,whichgivesanon-emptystringconsisti...

Givenasequenceofintegersa1, ..., anandqqueriesx1, ..., xqonit.Foreachqueryxiyouhavetocountthenumberofpairs(l, r)suchthat1 ≤ l ≤ r ≤ nandgcd(al, al + 1, ..., ar) = xi.isagreatestcommondivisorofv1, v2, ..., vn,thatisequaltoalargestpositiveintegerthatdividesallvi.InputThefirstlineoftheinputcontainsintegern,(1 ≤ n ≤ 105),denotingthelengthofthesequence.Thenextlinecont...
![「BZOJ1636」[Usaco2007 Jan] Balanced Lineup](http://hzwer.com/wp-content/themes/ly/image/image_post/2014-12-05_10-54-32.jpg)
DescriptionForthedailymilking,FarmerJohn'sNcows(1<=N<=50,000)alwayslineupinthesameorder.OnedayFarmerJohndecidestoorganizeagameofUltimateFrisbeewithsomeofthecows.Tokeepthingssimple,hewilltakeacontiguousrangeofcowsfromthemilkinglineuptoplaythegame.However,forallthecowstohavefuntheyshouldnotdiffertoomuchinheight.FarmerJohnhasmadealistofQ(1<=Q<=200,000)potentialgroupsofcow...
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