hdu1239

hdu1239 Calling Extraterrestrial Intelligence Again (枚举)

CallingExtraterrestrialIntelligenceAgainTimeLimit:2000/1000MS(Java/Others)    MemoryLimit:65536/32768K(Java/Others)TotalSubmission(s):3929    AcceptedSubmission(s):2062ProblemDescriptionAmessagefromhu
yew1eb·2013-07-15 21:00

HDU1239：Calling Extraterrestrial Intelligence Again

ProblemDescriptionAmessagefromhumanstoextraterrestrialintelligencewassentthroughtheAreciboradiotelescopeinPuertoRicoontheafternoonofSaturdayNovember16,1974.Themessageconsistedof1679bitsandwasmeanttobe
libin56842·2013-05-31 15:00

hdu1239

/*分析：  下面的摘是杭电课件里面的分析： 摘：  p,q的范围其实可在2—50000(why?)然而，这是最小的范围吗？考虑大于10000的某个质数，不妨设为Q，另一个质数为P，则：1、如果P10，P*Q>100000而考虑到a,b的取值范围(1=0;i--) { for(l=i;l>=0;l--) { if(prime[i]>m||prime[l]>m||prime[i]*prime[l]>
Ice_Crazy·2012-04-20 22:00
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