Solved by tractor

#	Title	# Solved	Avg. Tries
1000	A+B STANDARD	316,788	2.58
1001	A-B STANDARD	272,025	1.44
2438	별 찍기 - 1 STANDARD	182,357	1.61
2557	Hello World STANDARD	350,224	2.54
2753	윤년 STANDARD	179,175	1.94

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