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 6037 1074 18% 0.02 969 560 58% 6.7
I Can Guess the Data Structure! 9508 2881 30% 0.00 2075 1825 88% 2.7