Solved by dh030323

#	Title	# Solved	Avg. Tries
10869	사칙연산 STANDARD	212,850	2.22
10718	We love kriii STANDARD	180,721	1.53
10171	Cats STANDARD	172,925	2.83
2557	Hello World STANDARD	335,490	2.54
1001	A-B STANDARD	259,581	1.44
1000	A+B STANDARD	302,858	2.57

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