Data-Structure:平衡二分探索木

#	ID	Name	Difficulty	Solver
1	abc352_d	D. Permutation Subsequence	714	8109
2	arc030_4	D. グラフではない	3246	136
3	past202112_m	M. Deadnames	null	219
4	soundhound2018_summer_final_e	E. Hash Swapping	null	127