Start: Feb. 14, 2020, midnight
Description: In this phase, you can submit the result of validation set and see your rank in leaderboard.
Start: May 20, 2020, 11:59 p.m.
Description: In this phase, you can submit the result of test set and the leaderboard will show the result of testing set.
Dec. 31, 2025, 11:59 p.m.
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