摘要：
http://codevs.cn/problem/2956/ 时间限制: 1 s 空间限制: 32000 KB 题目等级 : 黄金 Gold 题解 查看运行结果 http://codevs.cn/problem/2956/ 时间限制: 1 s 空间限制: 32000 KB 题目等级 : 黄金 Gol 阅读全文
摘要：
https://www.luogu.org/problem/show?pid=1657 题目描述 学校放寒假时，信息学奥赛辅导老师有1,2,3……x本书，要分给参加培训的x个人，每人只能选一本书，但是每人有两本喜欢的书。老师事先让每个人将自己喜欢的书填写在一张表上。然后根据他们填写的表来分配书本，希 阅读全文
摘要：
https://www.luogu.org/problem/show?pid=1825 题目描述 This past fall, Farmer John took the cows to visit a corn maze. But this wasn't just any corn maze: i 阅读全文
摘要：
https://www.luogu.org/problem/show?pid=2919 题目描述 The farm has many hills upon which Farmer John would like to place guards to ensure the safety of his 阅读全文