Solved by whds0524

#	Title	# Solved	Avg. Tries
2557	Hello World STANDARD	358,164	2.54
7287	Registration STANDARD	62,702	1.92
10171	Cats STANDARD	185,777	2.80
10699	오늘 날짜 STANDARD	36,726	1.84
10869	사칙연산 STANDARD	229,864	2.24
11382	꼬마 정민 STANDARD	92,465	2.48

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