Solved by xiaowuc1

#	Title	# Solved	Avg. Tries
21180	Reconstruct Sum	112	1.40
21179	Derangement Rotations	21	2.67
21178	Basic Basis	8	2.25
21177	No Thanks!	84	1.45
21176	Smoothie Stand	44	1.68
21173	ICPC Record Matching	15	3.93
21170	Digital Speedometer	12	2.83
21168	Agamemnon's Odyssey	15	1.27
21167	Curve Speed	191	2.04
21166	Substring Characters	18	1.06
21165	Redundant Binary Notation	16	1.06
21164	Ride-Hailing	11	3.55
21163	LogDB	10	1.20
21160	Weighty Tomes	5	1.00
21159	Simply Sudoku	10	1.20
21158	Scholar's Lawn	6	8.33
21157	Restroom Monitor	17	2.65
21156	A Rank Problem	58	1.57
21154	Over the Hill, Part 1	30	1.73
21153	Oreperations Research	6	1.33
21152	Math Trade	14	1.43
21151	Kinky Word Searches	12	2.50
21149	Unread Messages	35	1.40
21148	TripTik	9	3.00
21147	Triangular Collection	30	1.37
21146	Rating Problems	222	1.15
21145	Rainbow Numbers	18	2.61
21144	Missing Number	98	1.57
21143	Magic Trick	128	1.12
21142	Longest Common Subsequence	38	1.39
21141	Kth Subtree	27	4.78
21140	Exciting Tournament	7	1.57
21139	Exam Manipulation	54	1.26
21138	Dominating Duos	35	1.63
21136	Bitonic Ordering	30	1.87
21135	Bad Packing	30	2.83
21134	Ant Typing	33	1.76
21133	N-Queen 2	218	3.02
21127	Binary Supersonic Utahraptors	39	1.13
21112	Easter Gift	13	1.15
21105	New Financial Year	232	1.12
21104	Miner	16	1.38
21098	Composite Sequence	43	1.95
21089	Excluded Min	18	2.89
21059	Methodic Multiplication	87	1.17
21058	Language Survey	16	5.56
21057	Keep Calm And Carry Off	23	1.74
21056	Joining Flows	22	1.91
21055	Infection Estimation	20	5.30
21054	Hiring and Firing	10	3.30

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