跑去上海打了这两场考试,结果惨不忍睹 (╯‵□′)╯︵┻━┻
所以我取消了最近几天的行程专心写题 _(:з)∠)_
跑去上海打了这两场考试,结果惨不忍睹 (╯‵□′)╯︵┻━┻
所以我取消了最近几天的行程专心写题 _(:з)∠)_
来自 2014 年信息学奥林匹克中国国家队候选队员作业。
Hat puzzles are logic problems that date back to as early as 1961.[1] Such hat puzzles, frequently contextualized as prisoners and hats puzzles, are induction puzzles (a kind of logic puzzle) that involve reasoning about the actions of other people, drawing in aspects of Game theory sometimes called the hierarchy of beliefs. There are many variations, but the central theme remains the same.
区间的连续子区间的最值之和问题。
Kruskal 重构树的经典应用。
IOI 2018 Day 1 T1,交互题。
细节很多的树形 DP + 贪心 + 二分。
二分图最小边染色的灵活运用。
经典的莫比乌斯反演题。
简单的题目,既是礼物,也是毒药。
B 君设计了一道简单的题目,准备作为 gift 送给大家。