Language Details: Lisp
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Lisp is a family of computer programming languages with a long history and a distinctive, fully parenthesized Polish prefix notation.
Problems solved
- Qualification Round (102 solutions by 26 contestants):
 - Bot Trust: 20 small solutions, 16 large solutions.
 - Magicka: 17 small solutions, 13 large solutions.
 - Candy Splitting: 15 small solutions, 12 large solutions.
 - GoroSort: 5 small solutions, 4 large solutions.
 
- Round 1A (7 solutions by 4 contestants):
 - FreeCell Statistics: 4 small solutions, 3 large solutions.
 
- Round 1B (20 solutions by 10 contestants):
 - RPI: 10 small solutions, 10 large solutions.
 
- Round 1C (27 solutions by 13 contestants):
 - Square Tiles: 11 small solutions, 10 large solutions.
 - Space Emergency: 1 small solution.
 - Perfect Harmony: 5 small solutions.
 
- Round 2 (2 solutions by 1 contestant):
 - Airport Walkways: 1 small solution, 1 large solution.
 
- Round 3 (2 solutions by 1 contestant):
 - Irregular Cakes: 1 small solution, 1 large solution.
 
Submission Origin
| United States (5 contestants) Japan (3 contestants) France (3 contestants) Vietnam (2 contestants) Taiwan (2 contestants) United Kingdom (1 contestant)  | Switzerland (1 contestant) Singapore (1 contestant) Russia (1 contestant) Poland (1 contestant) Norway (1 contestant) Mexico (1 contestant)  | India (1 contestant) Germany (1 contestant) Czech Republic (1 contestant) Canada (1 contestant) Australia (1 contestant)  |