Solved by ldy4869

#	Title	# Solved	Avg. Tries
9095	Adding 1s, 2s, and 3s	64,027	1.54
10807	개수 세기 STANDARD	86,570	1.62
11726	2×n 타일링	57,582	2.71
11727	2×n 타일링 2	41,860	1.71

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