Solved by moonrabbit2

#	Title	# Solved	Avg. Tries
19327	Elevator	12	1.33
19328	Code-Cola Plants	11	1.45
19329	GCD	14	6.79
19330	Berland Post	10	4.80
19333	Subsequence Sum Queries	26	4.15
19334	Consistent Occurrences	13	7.23
19335	Increasing Costs	24	1.67
19363	Lowest Common Ancestor	22	5.73
19381	Ascending Tree	33	2.15
19455	Bitwise Queries	128	3.13
19458	Expected LCP	13	1.46
19472	Array and Operations	132	1.71
19486	Colourings	17	3.24
19514	Intersection is Not Allowed!	39	4.36
19536	감자 농장	73	3.00
19541	역학 조사	377	3.13
19544	함수 복원	174	2.08
19546	Setting Maps	22	3.73
19547	애완 트리	35	3.03
19549	레이저 연구소	26	4.46
19551	관광 사업	13	6.15
19558	Joker	32	3.31
19570	삼각 분할	13	1.38
19613	Mountains and Valleys	8	1.63
19618	Painting Walls	46	4.15
19619	Swapping Cities	51	2.37
19628	Marshmallow Molecules	17	1.18
19632	Fun Palace	10	3.50
19650	개미여행	26	7.19
19666	Cryptography	14	1.14
19672	Feast	52	2.90
19673	Rigged Roads	7	1.43
19693	Safety	74	1.45
19702	친구	43	5.00
19852	공정한 회의	32	2.19
19854	직선형 분자 만들기	20	5.60
19862	Koosaga's problem	26	1.96
19908	Экспресс 20/19	12	5.17
19930	Jelly Flavours	19	3.32
19936	Packing Biscuits	54	2.83
19943	조명등	254	5.13
20023	Advertisement Matching	34	2.47
20027	LCS 8	16	1.81
20029	Mock Competition Marketing	76	2.49
20030	Query On A Tree 17	29	2.90
20031	Remote Control	45	1.60
20034	Steel Slicing 2	17	2.76
20036	Ball Alignment	79	3.70
20037	Bit String	33	9.18
20042	Hotspots	29	3.55

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