随笔分类 - 数学

Light oj 1043(数学)

摘要：See the picture below. You are given AB, AC and BC. DE is parallel to BC. You are also given the area ratio between ADE and BDEC. You have to find the 阅读全文

posted @ 2016-08-10 09:52 不忧尘世不忧心阅读(178) 评论(0) 推荐(0)

LightOJ 1234（调和级数）

摘要：http://acm.hust.edu.cn/vjudge/contest/121397#problem/A Description In mathematics, the nth harmonic number is the sum of the reciprocals of the first 阅读全文

posted @ 2016-08-04 20:23 不忧尘世不忧心阅读(214) 评论(0) 推荐(0)