Solved by hs85037822

#	Title	# Solved	Avg. Tries
11382	꼬마 정민 STANDARD	91,946	2.48
10998	A×B STANDARD	231,903	1.30
10869	사칙연산 STANDARD	229,290	2.24
10171	Cats STANDARD	185,337	2.80
1001	A-B STANDARD	278,015	1.45
1000	A+B STANDARD	323,535	2.59

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