Solved by heogun

#	Title	# Solved	Avg. Tries
1991	트리 순회	34,109	1.49
2557	Hello World STANDARD	362,304	2.54
10699	오늘 날짜 STANDARD	37,675	1.85
18258	큐 2	31,567	3.03
28278	스택 2	14,373	2.69

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