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Name Start time Duration Difficulty Public Round #16 Not set 5 hours ? Public Easy Round #4 Not set 5 hours ? Public Round #15 Not set 4 hours 30 minutes ★★★★☆ Public Round #14 2025-01-12 08:30:00 5 hours ★★★★☆ Public CT* Round #2 Day 1 Not set 5 hours ★★★★★☆ Public NOIP Round #8 (Div. 1, 提高) Not set 4 hours 30 minutes ★★★ Public NOIP Round #7 (Div. 1, 提高) Not set 4 hours ★★★ Public Round #13 2024-06-30 08:30:00 5 hours ★★★★ Public Round #12 2024-02-25 08:30:00 4 hours 30 minutes ★★★★ Public NOIP Round #6 (Div. 1, 提高) 2023-10-15 08:30:00 4 hours ★★★ Public NOIP Round #6 (Div. 2, 普及) 2023-10-15 08:30:00 3 hours 30 minutes ★★ Public Round #11 2023-07-19 08:00:00 5 hours ★★★★ Public Round #10 2023-07-18 08:00:00 5 hours 20 minutes ★★★★ Public Round #9 2023-05-14 08:00:00 5 hours ★★★★ Public Round #8 2023-03-19 08:00:00 5 hours ★★★★ Public NOIP Round #5 (Div. 1, 提高) 2023-02-25 08:30:00 4 hours 30 minutes ★★★ Public CTS Round 1 Day 2 2023-01-08 08:30:00 5 hours ★★★★★★ Public CTS Round 1 Day 1 2023-01-07 08:30:00 5 hours ★★★★★★ Public NOIP Round #4 (Div. 1, 提高) 2022-11-20 08:30:00 4 hours 30 minutes ★★★ Public NOIP Round #4 (Div. 2, 普及) 2022-11-20 08:30:00 3 hours 30 minutes ? Public NOIP Round #3 (Div. 1, 提高) 2022-10-22 08:30:00 4 hours 30 minutes ★★★ Public NOIP Round #3 (Div. 2, 普及) 2022-10-22 08:30:00 3 hours 30 minutes ★★ Public NOIP Round #2 (Div. 1, 提高) 2022-10-04 08:30:00 4 hours 30 minutes ★★★ Public NOIP Round #2 (Div. 2, 普及) 2022-10-04 08:30:00 3 hours 30 minutes ★★ Public Easy Round #3 2022-09-25 08:00:00 5 hours ★★★ Public NOIP Round #1 (Div. 1, 提高) 2022-09-10 14:00:00 4 hours ★★★ Public NOIP Round #1 (Div. 2, 普及) 2022-09-10 14:00:00 3 hours 30 minutes ★★ Public Round #7 2022-07-31 08:00:00 5 hours ★★★★ Public Round #6 2022-07-03 08:00:00 5 hours ★★★★★ Public Round #5 2022-06-12 08:00:00 5 hours ★★★★ Public Round #4 2022-06-05 08:00:00 5 hours ★★★★ Public Easy Round #2 2022-05-01 08:00:00 5 hours ★★★★ Public Easy Round #1 2022-04-23 08:00:00 5 hours ★★★★ Public Round #3 2022-04-14 08:30:00 4 hours 30 minutes ★★★★ Public Round #2 2022-04-09 08:30:00 4 hours 30 minutes ★★★★★ Extra Public Round #1 2022-04-07 08:30:00 4 hours 30 minutes ★★★ Public Round #1 2022-04-03 08:30:00 4 hours 30 minutes ★★★★ Public Test Round #1 2022-03-29 12:00:00 60 hours ?