Problems from Rujia Liu's Present 3: A datastructure contest celebrating the 100th anniversary of Tsinghua University

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Almost Union-Find 10735 1884 18% 0.02 1695 1044 62% 6.0
I Can Guess the Data Structure! 17904 5427 30% 0.00 3712 3242 87% 3.0