双 11 酣战：究竟谁是Number 1？
经过了近一个月的预热，今年的 11 月 11 日的钟声准时敲响，一场全民网购狂欢也由此拉开帷幕。当然，各大电商平台和品牌方也卯足了劲，实时对外播报自己的战绩。 电商平台 阿里巴巴： 作为双 11的发起者，加之有近 7.85 亿的庞大用户群体加持(雷锋网按：数
hdu3565 Bi-peak Number (有上界和下界的数位dp)
Problem Description A peak number is defined as continuous digits {D0,D1 … Dn-1} (D0 0 and n = 3),which exist Dm (0 m n – 1) satisfied Di-1 Di (0 i = m) and Di Di+1 (m = i n – 1). A number is called bi-peak if it is a concatenation of t
hdu1018——Big Number（大数阶乘）
Problem Description In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data,encryption,etc. In this problem you are given a number,you have to determine the
