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Name	Start time
2025 北京大学全国优秀中学生信息学冬季体验营 (PKUWC 2025) Day 2	2025-04-23 07:02:42
2025 北京大学全国优秀中学生信息学冬季体验营 (PKUWC 2025) Day 1	2025-04-16 12:24:40