2018年10月21日
POJ 2248
摘要： An addition chain for n is an integer sequence <a0, a1,a2,...,am="">with the following four properties: a0 = 1 am = n a0 < a1 < a2 < ... < am-1 < am F 阅读全文
posted @ 2018-10-21 17:39 hit_yjl 阅读(271) 评论(0) 推荐(0) 编辑