章节 1. Others

开放

题目 尝试 AC 难度
109   [Extra Contest #1] Polygon Areas 4 3 1
110   [Extra Contest #2] Sleeping Bear's Honey 3+ 25 3 9
183   [Extra Contest #3] Exclamation Covering 109 6 9
184   [Extra Contest #4] Factorial Grandmaster 34 2 9
208   [Extra Contest #5] 2025 CMOP (A) Day 1 10 3 10
216   [Extra Contest #6 / CFCOI Collection 1 Appendix] Unique Laser Gun 35 5 6

章节 2. Sleeping Cup #1

开放

题目 尝试 AC 难度
16   [Sleeping Cup #1] Sleeping pairs 61 8 2
17   [Sleeping Cup #1] Have a check 33 6 4
18   [Sleeping Cup #1] Moving like a spider 43 6 6
19   [Sleeping Cup #1] Faster than expected 26 5 8

章节 3. Sleeping Cup #2

开放

题目 尝试 AC 难度
20   [Sleeping Cup #2] Are you ready for it? 43 10 5
21   [Sleeping Cup #2] Sleeping Bear's Honey 1 29 7 3
22   [Sleeping Cup #2] Sleeping Bear's Honey 2 18 5 5
23   [Sleeping Cup #2] Sleeping Bear's Honey 3 171 4 8
24   [Sleeping Cup #2] Classic Counting Problem 8 4 8

章节 4. Sleeping Cup #3 (Random Round / Goodbye 2024)

开放

题目 尝试 AC 难度
100   [Sleeping Cup #3] Grammar quiz 51 6 3
101   [Sleeping Cup #3] Not a median problem 78 6 5
102   [Sleeping Cup #3] Missing circle 32 8 1
103   [Sleeping Cup #3] Fast permutation transform 8 4 8

章节 5. Sleeping Cup #4 (1st Anniversary Celebration Contest)

开放

题目 尝试 AC 难度
104   [Sleeping Cup #4] Football Loser 43 10 2
105   [Sleeping Cup #4] Tangent Dancer 24 7 2
106   [Sleeping Cup #4] Lottery Cheater 18 5 4
107   [Sleeping Cup #4] Factorial Master 18 5 7
108   [Sleeping Cup #4] Proof Writer 12 4 7