2019年5月16日
SPOJ BANLUM 数位dp+三进制状态压缩
摘要： Balanced numbers have been used by mathematicians for centuries. A positive integer is considered a balanced number if: 1) Every even digit appears an 阅读全文
posted @ 2019-05-16 22:09 kongbb 阅读(159) 评论(0) 推荐(0)
HDU 5358 枚举+尺选
摘要： soda has an integer array a1,a2,…,ana1,a2,…,an. Let S(i,j)S(i,j) be the sum of ai,ai+1,…,ajai,ai+1,…,aj. Now soda wants to know the value below: ∑i=1n 阅读全文
posted @ 2019-05-16 16:16 kongbb 阅读(166) 评论(0) 推荐(0)