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            UID: 2417, Registered at 2025-6-27 16:21:44, last login at 2025-9-28 21:12:49, last active at 2025-10-15 10:41:08.
Solved 5 problems
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| # | Date | Contest | Rank | New Rating | Δ | 
|---|---|---|---|---|---|
| 1 | 2025-07-18 20:00:00 | 代码源挑战赛 Round 21 | 54 | 1085 | 
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