Solved by httx4903

#	Title	# Solved	Avg. Tries
14681	Quadrant Selection STANDARD	161,510	1.64
15552	빠른 A+B STANDARD	133,078	2.20
15649	N과 M (1) STANDARD	52,769	1.58
15650	N과 M (2) STANDARD	49,336	1.35
15988	1, 2, 3 더하기 3	11,166	2.88
15989	1, 2, 3 더하기 4	6,551	1.56
15990	1, 2, 3 더하기 5	7,958	3.22
16172	나는 친구가 적다 (Large) STANDARD	1,304	2.40

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