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 5191 913 18% 0.02 811 459 57% 6.8
I Can Guess the Data Structure! 7454 2260 30% 0.00 1652 1465 89% 2.2