2005/Practice/冬合宿
- Problem A: Almost the Shortest Route
- Problem B: Balance The Tree
- Problem C: 3D Balls
- Problem D: Declaration of Content
- Problem E: Knocked Down by English
- Problem F: Friday, the 13th
- Problem G: Illuminating the Hedge
- Problem H: The Lazy Programmer
- Problem I: Moduloscope
- Problem J: Exploring Pyramids
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