Sweepercleaningequipmentisdividedintohand-pushsweepersandride-onsweepers.Thismachinesweepsawaydustwhilesweepingthefloor,one-step,efficientcleaning,savinglaborcostsandimprovingcleaningefficiency.Hand-pushsweepersaredivided

Thehand-pushfloorscrubberisanelectriccleaningequipmentsuitablefordifferentfloormaterialsanddifferentcleaningplaces.Whilecleaningthefloor,itsucksupthesewageandtakesthesewageawayfromthesite.Theworkingprincipleissimple,

Whatafloorwasher?Theterm“Scrubber”isusedtodescribewhatwecallanautomaticscrubber.Essentially,itsamopandbucketsubstituteforapowerful,efficientcleaner.Thescrubberperformsthreemaintaskssimultaneously:1.Itprovidesacleani

原题链接题解1.朴素想法，每头牛要么值班要么不值班，搜索遍历所有情况\(O(2^n)\)2.稍作修改，如果一头牛值班，那么在它值班结束时间之前值班的牛的数量一定是最优的，\(o(nT)\)3.换个思路，已知要覆盖\([1,T]\)这个时间段，所以左端点为\(1\)的牛必须选一个，且选右端点最大的那个，设这