Solved by spectaclehong

#	Title	# Solved	Avg. Tries
6240	Cheapest Palindrome	46	1.57
6241	Dining	230	2.20
6242	City Horizon	64	2.09
6322	Geometry made simple	1,923	2.81
6362	Unimodal Palindromic Decompositions	53	1.74
6416	Is It A Tree? STANDARD	1,134	4.92
6439	Intersection	787	4.06
6543	The Bottom of a Graph	639	1.87
6549	Largest Rectangle in a Histogram	11,083	3.63
6569	Mondriaan's Dream	225	2.15
6588	Goldbach's Conjecture	12,448	4.57
6600	The Circumference of the Circle	299	1.77
6603	Lotto	26,089	1.80
6620	Simple Polygon	16	1.63
7036	Grazing on the Run	55	1.47
7038	Cow Patterns	25	2.92
7039	Barn Expansion	16	1.81
7040	Layout	106	2.53
7041	Dividing the Path	31	2.94
7042	Cow Ski Area	40	3.18
7043	Cleaning Shifts	87	3.28
7044	Bad Cowtractors	229	1.90
7045	Tree Cutting	123	1.55
7153	Goat Ropes	26	2.19
7154	Job Postings	188	3.19
7287	Registration STANDARD	62,031	1.92
7347	Flip and Shift	122	2.17
7453	4 Values whose Sum is 0	6,751	4.38
7469	K-th Number	1,833	3.07
7489	Factorials	893	2.42
7511	Poking the Social	1,037	2.48
7562	Knight Moves STANDARD	27,185	1.90
7568	덩치	51,934	1.78
7569	토마토 STANDARD	32,527	2.33
7570	줄 세우기	2,444	2.51
7576	토마토 STANDARD	52,561	2.67
7578	공장	3,810	2.55
7579	앱 STANDARD	9,366	2.99
7662	Dual Priority Queue	13,096	4.52
7677	Fibonacci	742	1.37
7806	GCD!	387	4.18
7812	Tree Median	535	2.85
7869	Circular Area	1,339	3.26
7870	Accountant notes	6	3.83
7879	Jack’s socks	14	1.71
7911	Laundry	31	3.06
7916	Cross Spider	54	4.26
7976	Sequence	159	2.86
7998	Chocolate	78	1.32
8071	One-sequence	34	1.68

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