Solved by s72899

#	Title	# Solved	Avg. Tries
16504	종이접기	1,289	1.73
16561	3의 배수	1,814	1.54
16769	Mixing Milk	1,392	1.44
17027	Shell Game	782	1.61
17028	Sleepy Cow Sorting	454	1.95

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