Solved by pete_mitchell

#	Title	# Solved	Avg. Tries
15650	N과 M (2) STANDARD	48,561	1.35
15829	Hashing	19,980	3.33
17219	비밀번호 찾기	18,620	1.40
17626	Four Squares	12,567	2.29
18111	마인크래프트	15,234	4.15

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