- A. Triangle Tiling
- B. Balanced Binary String
- C. Digital Root
- D. Ternary String Revolution
- E. Chiaki Chain Counting
- F. Subset Sum
- G. Back and Forth
- H. Stone Game
- I. Longest Lyndon Prefix
- J. Program Optimization
- K. Determination
- L. Fraction Reduction
题意：
题意：
题意：
题意：