2019年11月19日
LightOJ - 1095 - Arrange the Numbers（错排）
摘要： 链接： https://vjudge.net/problem/LightOJ 1095 题意： Consider this sequence {1, 2, 3 ... N}, as an initial sequence of first N natural numbers. You can rea 阅读全文
posted @ 2019-11-19 00:23 YDDDD 阅读(107) 评论(0) 推荐(0)
LightOJ - 1067 - Combinations（组合数）
摘要： 链接： https://vjudge.net/problem/LightOJ 1067 题意： Given n different objects, you want to take k of them. How many ways to can do it? For example, say th 阅读全文
posted @ 2019-11-19 00:08 YDDDD 阅读(160) 评论(0) 推荐(0)
LightOJ - 1058 - Parallelogram Counting（数学，计算几何）
摘要： 链接： https://vjudge.net/problem/LightOJ 1058 题意： There are n distinct points in the plane, given by their integer coordinates. Find the number of paral 阅读全文
posted @ 2019-11-19 00:06 YDDDD 阅读(178) 评论(0) 推荐(0)
LightOJ - 1005 - Rooks（组合数）
摘要： 链接： https://vjudge.net/problem/LightOJ 1005 题意： A rook is a piece used in the game of chess which is played on a board of square grids. A rook can onl 阅读全文
posted @ 2019-11-19 00:03 YDDDD 阅读(209) 评论(0) 推荐(0)