Data-Structure:平衡二分探索木

#	ID	Name	Difficulty	Solver
1	abc352_d	G. Permutation Subsequence	714	9195
2	arc030_4	D. グラフではない	3246	138
3	past202112_m	M. Deadnames	null	271
4	soundhound2018_summer_final_e	E. Hash Swapping	null	146