Solved by lyb2k

#	Title	# Solved	Avg. Tries
2557	Hello World STANDARD	360,666	2.54
2839	ŠEĆER STANDARD	103,434	2.63
11659	구간 합 구하기 4	43,252	2.60
15649	N과 M (1) STANDARD	52,121	1.58

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