![「BZOJ1620」[Usaco2008 Nov] Time Management 时间管理](http://hzwer.com/wp-content/themes/ly/image/image_post/2014-12-10_11-20-08.jpg)
DescriptionEverthematuringbusinessman,FarmerJohnrealizesthathemustmanagehistimeeffectively.HehasNjobsconvenientlynumbered1..N(1<=N<=1,000)toaccomplish(likemilkingthecows,cleaningthebarn,mendingthefences,andsoon).Tomanagehistimeeffectively,hehascreatedalistofthejobsthatmustbefinished.JobirequiresacertainamountoftimeT_i(1<=T_i<=1,000)tocompleteandfurthermoremustbefinishedbyti...
![「BZOJ1648」[Usaco2006 Dec] Cow Picnic 奶牛野餐](http://hzwer.com/wp-content/themes/ly/image/image_post/2014-12-10_11-27-02.jpg)
DescriptionThecowsarehavingapicnic!EachofFarmerJohn'sK(1<=K<=100)cowsisgrazinginoneofN(1<=N<=1,000)pastures,convenientlynumbered1...N.ThepasturesareconnectedbyM(1<=M<=10,000)one-waypaths(nopathconnectsapasturetoitself).Thecowswanttogatherinthesamepasturefortheirpicnic,but(becauseoftheone-waypaths)somecowsmayonlybeabletogettosomepastures.Helpthecowsoutbyfiguringouth...
![「BZOJ1635」[Usaco2007 Jan] Tallest Cow 最高的牛](http://hzwer.com/wp-content/themes/ly/image/image_post/2014-12-10_12-52-35.jpg)
DescriptionFJ'sN(1<=N<=10,000)cowsconvenientlyindexed1..Narestandinginaline.Eachcowhasapositiveintegerheight(whichisabitofsecret).YouaretoldonlytheheightH(1<=H<=1,000,000)ofthetallestcowalongwiththeindexIofthatcow.FJhasmadealistofR(0<=R<=10,000)linesoftheform"cow17seescow34".Thismeansthatcow34isatleastastallascow17,andthateverycowbetween17and34hasaheightthatisstri...
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