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www.mikescher.com/www/statics/aoc/2022/02_solution-1.nim

67 lines
1.4 KiB
Nim

import std/strutils
const ROCK = 0
const PAPE = 1
const SCIS = 2
proc get_rps_winner(m1: int, m2: int): int =
if m1 == ROCK and m2 == ROCK:
return 0
if m1 == ROCK and m2 == PAPE:
return 2
if m1 == ROCK and m2 == SCIS:
return 1
if m1 == PAPE and m2 == ROCK:
return 1
if m1 == PAPE and m2 == PAPE:
return 0
if m1 == PAPE and m2 == SCIS:
return 2
if m1 == SCIS and m2 == ROCK:
return 2
if m1 == SCIS and m2 == PAPE:
return 1
if m1 == SCIS and m2 == SCIS:
return 0
return -1
proc run02_1(): string =
const input = staticRead"../input/day02.txt"
var score = 0
for line in splitLines(input):
if line == "":
continue
let move_elve = int(line[0]) - int('A')
let move_me = int(line[2]) - int('X')
let delta1 = (move_me + 1)
var delta2 = 0
let winner = get_rps_winner(move_elve, move_me)
if winner == 0:
delta2 = 3 # draw
elif winner == 1:
delta2 = 0 # elve win
elif winner == 2:
delta2 = 6 # me win
# echo line , " -> " , move_elve, "|", move_me, " -> ", winner, " || ", score, " + ", delta1, " + ", delta2
score += delta1
score += delta2
return intToStr(score)
when not defined(js):
echo run02_1()
else:
proc js_run02_1(): cstring {.exportc.} =
return cstring(run02_1())