Solved by hyunmin_29

#	Title	# Solved	Avg. Tries
1309	동물원	16,129	2.13
1431	시리얼 번호	9,130	1.74
2231	Digit Generator	66,696	2.20
2588	곱셈 STANDARD	174,830	2.15
7568	덩치	53,475	1.78

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