2019年2月21日
PAT 甲级 1135 Is It A Red-Black Tree
摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805346063728640 There is a kind of balanced binary search tree named red-black tree in t 阅读全文
posted @ 2019-02-21 21:56 _Zlrrr 阅读(294) 评论(0) 推荐(0)
PAT 甲级 1134 Vertex Cover
摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805346428633088 A vertex cover of a graph is a set of vertices such that each edge of th 阅读全文
posted @ 2019-02-21 21:52 _Zlrrr 阅读(312) 评论(0) 推荐(0)
PAT 甲级 1045 Favorite Color Stripe
摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805437411475456 Eva is trying to make her own color stripe out of a given one. She would 阅读全文
posted @ 2019-02-21 12:30 _Zlrrr 阅读(211) 评论(0) 推荐(0)