Solved by masaru

#	Title	# Solved	Avg. Tries
18411	試験 (Exam)	2,022	1.20
18412	文字列の反転 (Inversion of a String)	357	1.52
18414	X に最も近い値 (The Nearest Value)	1,679	1.38
18883	N M 찍기	1,783	2.29

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