Solved by whds0524

#	Title	# Solved	Avg. Tries
2557	Hello World STANDARD	363,564	2.54
7287	Registration STANDARD	63,696	1.92
10171	Cats STANDARD	188,901	2.79
10699	오늘 날짜 STANDARD	37,882	1.85
10869	사칙연산 STANDARD	233,828	2.24
11382	꼬마 정민 STANDARD	96,015	2.47

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