Solved by shibainu

#	Title	# Solved	Avg. Tries
23971	ZOAC 4	4,415	2.05
9020	Goldbach’s Conjecture	27,743	2.54
5073	Triangles	20,314	2.11
1929	소수 구하기	63,275	3.56
1759	Securing the Barn	27,329	2.23

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