2014年8月25日
uva 10325 The Lottery（组合数学-容斥原理）
摘要： The LotteryThe Sports Association of Bangladesh is in great problem with their latest lottery 'Jodi laiga Jai'. There are so many participants this ti... 阅读全文
posted @ 2014-08-25 20:29 炒饭君 阅读(177) 评论(0) 推荐(0) 编辑
HDU 4372 Count the Buildings（组合数学-斯特林数,组合数学-排列组合）
摘要： Count the BuildingsProblem DescriptionThere are N buildings standing in a straight line in the City, numbered from 1 to N. The heights of all the buil... 阅读全文
posted @ 2014-08-25 20:18 炒饭君 阅读(216) 评论(0) 推荐(0) 编辑
HDU 3240 Counting Binary Trees（组合数学-卡特兰数,数论-整数快速幂,数论-求逆元）
摘要： Counting Binary TreesProblem DescriptionThere are 5 distinct binary trees of 3 nodes:Let T(n) be the number of distinct non-empty binary trees of no m... 阅读全文
posted @ 2014-08-25 14:52 炒饭君 阅读(265) 评论(0) 推荐(0) 编辑