![「BZOJ1677」[Usaco2005 Jan] Sumsets 求和](http://hzwer.com/wp-content/themes/ly/image/image_post/2014-12-10_12-50-26.jpg)
DescriptionFarmerJohncommandedhiscowstosearchfordifferentsetsofnumbersthatsumtoagivennumber.Thecowsuseonlynumbersthatareanintegerpowerof2.Herearethepossiblesetsofnumbersthatsumto7:1)1+1+1+1+1+1+12)1+1+1+1+1+23)1+1+1+2+24)1+1+1+45)1+2+2+26)1+2+4HelpFJcountallpossiblerepresentationsforagivenintegerN(1<=N<=1,000,000).给出一个N(1≤N≤10^6),使用一些2的若干次幂的数相加来求之.问有多少...

Mashmokh'sboss,Bimokh,didn'tlikeMashmokh.Sohefiredhim.MashmokhdecidedtogotouniversityandparticipateinACMinsteadoffindinganewjob.HewantstobecomeamemberofBamokh'steam.Inordertojoinhewasgivensomeprogrammingtasksandoneweektosolvethem.Mashmokhisnotaveryexperiencedprogrammer.Actuallyheisnotaprogrammeratall.Sohewasn'tabletosolvethem.That'swhyheaskedyoutohelphimwiththesetasks.Oneofthesetas...

ProblemDescriptionOnSaintValentine'sDay,AleximaginedtopresentaspecialpendanttohisgirlfriendmadebyKkindofpearls.Thependantisactuallyastringofpearls,anditslengthisdefinedasthenumberofpearlsinit.Asisknowntoall,Alexisveryrich,andhehasNpearlsofeachkind.Pendantcanbetoldapartaccordingtopermutationofitspearls.Nowhewantstoknowhowmanykindofpendantcanhemade,withlengthbetween1andN.Ofcour...
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