Arena: Quarter Solves × 10 Participate as a rated contestant for 10 times in the Arena and get full score for quarter or more of the problems in the contest
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Record of the Stars: Chapter 1 Participate as a rated contestant in the Arena
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Record of the Stars: Chapter 2 Participate as a rated contestant for 5 times in the Arena
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Record of the Stars: Chapter 3 Participate as a rated contestant for 10 times in the Arena