language: rail (v0.24) prompt: https://adventofcode.com/2022/day/02

```
"input" readf trim lines [the-lines]->
# TODO: Move this to Rail stdlib or builtins
[[ns]-> ns [[+] doin] ns length 1 - times last] [sum] def
[[choice-scores round-scores]->
the-lines [[line]->
choice-scores line chars last extract [choice]->
round-scores line extract [round]->
choice round +
] map sum
] [score-up] def
# Part 1
stab [["X" 1] ["Y" 2] ["Z" 3]] [insert] each [my-rps]->
stab [
["A X" 3] ["A Y" 6] ["A Z" 0]
["B X" 0] ["B Y" 3] ["B Z" 6]
["C X" 6] ["C Y" 0] ["C Z" 3]
] [insert] each [game-outcome]->
my-rps game-outcome score-up println
# Part 2
stab [["X" 0] ["Y" 3] ["Z" 6]] [insert] each [my-outcome]->
stab [
["A X" 3] ["A Y" 1] ["A Z" 2]
["B X" 1] ["B Y" 2] ["B Z" 3]
["C X" 2] ["C Y" 3] ["C Z" 1]
] [insert] each [game-rps]->
my-outcome game-rps score-up println
```