Solved by hyunmin_29

#	Title	# Solved	Avg. Tries
1309	동물원	15,327	2.13
1431	시리얼 번호	8,553	1.75
2231	Digit Generator	62,715	2.20
2588	곱셈 STANDARD	167,183	2.15
7568	덩치	51,194	1.78

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