Solved by qingyu

#	Title	# Solved	Avg. Tries
7148	Winter Roads	16	3.75
18446	IOI Problem Revised	13	3.00
18480	Four Elements	19	3.84
18557	Always Online	11	2.91
18558	Beautiful Now	17	3.00
18559	Call It What You Want	36	3.86
18560	Daylight	7	2.14
18561	Everything Has Changed	12	1.58
18562	Fireflies	9	1.67
18563	Glad You Came	7	1.00
18564	Hills And Valleys	12	1.25
18565	Innocence	3	1.67
18566	Just So You Know	5	2.20
18567	Kaleidoscope	6	1.17
18568	Lost In The Echo	2	1.00
18578	Jimp Numbers	15	2.33
18598	Minimum Spanning Trees	6	1.17
18599	Line Graphs	7	1.86
18600	Valentine’s Day	40	2.45
18601	Play Games with Rounddog	12	3.42
18602	Welcome Party	17	3.53
18603	Dense Subgraph	6	1.50
18605	Coins	23	3.17
18606	Block Breaker	22	2.73
18608	Make Rounddog Happy	9	1.22
18753	Alternative Accounts	29	1.55
18755	Cyclic Distance	50	2.70
18759	Geometry PTSD	29	4.45
18761	Interesting Game	1	3.00
18762	Junk Problem	43	3.56
18763	Knowledge-Oriented Problem	17	2.88
18764	LCM Sum	7	2.71
18910	Deja Vu	8	16.75
18913	Graph Coloring	59	1.73
18915	Insects	9	1.33
18969	Different Summands Counting	26	2.54
18977	Maximum Multiple	42	2.26
18978	Balanced Sequence	13	2.31
18979	Triangle Partition	47	1.60
18980	Distinct Values	9	1.33
18981	Maximum Weighted Matching	1	1.00
18982	Period Sequence	3	2.00
18983	Chiaki Sequence Revisited	4	4.25
18984	RMQ Similar Sequence	12	1.50
18985	Lyndon Substring	2	1.00
18986	Turn Off The Light	2	2.00
18987	Time Zone	32	4.31
19017	Automorphism	5	4.60
19020	Decomposition	10	3.40
19022	Flow	15	2.20

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