Solved by 8903215

#	Title	# Solved	Avg. Tries
14681	Quadrant Selection STANDARD	160,774	1.64
15552	빠른 A+B STANDARD	132,484	2.20
15740	A+B - 9	11,212	1.55
19532	수학은 비대면강의입니다	22,111	1.96

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