번호	제목
4850	Baskets of Gold Coins
4851	Toothpick Arithmetic
4852	Winter Festival
4853	Knots
4854	String Equations
4855	Tire Dimensions
4856	Random Walk
4857	Paint Mix
4858	Open and Close
4860	Smallest Difference
4861	Faulty Odometer
4862	마지막 자리
4863	Suit Distribution
4864	Gold Coins
4865	Shortest Prefixes
4866	Squares
4868	Mix and Build
4869	Blackjack
4872	SPIN
4873	SHAKE