Solved by sungj8770

#	Title	# Solved	Avg. Tries
11726	2×n 타일링	57,079	2.71
11727	2×n 타일링 2	41,501	1.71
12813	이진수 연산	2,263	1.65
13904	과제	5,166	1.87
17509	And the Winner Is... Ourselves!	834	1.14

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