번호	제목
28153	Repetitive String Invention
28154	Space Alignment
28155	Splitting Pairs
28156	Who Watches the Watchmen?
28157	Lucky Stars Management
28158	Pibonacci 2
28159	K번째 행운 수
28160	행운 수 구하기
28161	괄호 문자열 표기법 (Large)
28162	One, Two, Three
28163	Beautiful Sequence
28164	Optimal Quadratic Function
28165	Cooperation Game
28166	TreeScript
28167	Big Picture
28168	Painting Grid
28169	Shortest Path Query
28170	Goose, Goose, DUCK?
28171	Sum of Numbers
28172	Paddle Star