번호	제목
7890	가까운 점 찾기
7891	Can you add this?
7892	Johnny and the Quadratic Equation
7893	Vase collection
7894	큰 수
7895	Prison rearrangement
7896	Sightseeing tour
7897	A number game
7898	Euro Efficiency
7899	Markov Trains
7900	Hansel and Grethel
7901	Floors
7902	The Picnic
7903	Pearls
7904	허프만 트리
7905	Input
7906	Arithmetic Rectangle
7907	Bytean Road Race
7908	Will It Stop?
7909	Ants