2020 Mid-Atlantic USA Regional Contest

	#	タイトル
A	21146	Rating Problems
B	21149	Unread Messages
C	21134	Ant Typing
D	21138	Dominating Duos
E	21140	Exciting Tournament
F	21135	Bad Packing
G	21175	Painted Corridors
H	21148	TripTik
I	21136	Bitonic Ordering
J	21178	Basic Basis
K	21141	Kth Subtree
L	21142	Longest Common Subsequence
M	21144	Missing Number
N	21177	No Thanks!