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 8530 1490 17% 0.02 1384 813 59% 5.7
I Can Guess the Data Structure! 13882 4277 31% 0.00 2878 2543 88% 2.7