73 lines
2.6 KiB
Plaintext
73 lines
2.6 KiB
Plaintext
func rule_exists[rules_left: array, rules_right: array, a: i64, b: i64] : bool
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for k in 0..array.size(rules_left)
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if array.nth(rules_left, k) == a & array.nth(rules_right, k) == b
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return true
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return false
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func check[update: array, rules_left: array, rules_right: array] : bool
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for i in 0..array.size(update)
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for j in 0..i
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if rule_exists(rules_left, rules_right, array.nth(update, i), array.nth(update, j))
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return false
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return true
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func sort_by_rules[update: array, rules_left: array, rules_right: array] : void
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let swapped: bool = true
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while swapped
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swapped = false
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for i in 0..array.size(update)-1
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let a: i64 = array.nth(update, i)
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let b: i64 = array.nth(update, i+1)
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if rule_exists(rules_left, rules_right, b, a)
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let tmp: i64 = a
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array.set(update, i, b)
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array.set(update, i+1, tmp)
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swapped = true
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func part1[updates: array, rules_left: array, rules_right: array] : void
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let out = 0
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for i in 0..array.size(updates)
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let update: array = array.nth(updates, i)
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if check(update, rules_left, rules_right)
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out = out + array.nth(update, array.size(update) / 2)
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io.println_i64(out)
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func part2[updates: array, rules_left: array, rules_right: array] : void
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let out = 0
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for i in 0..array.size(updates)
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let update: array = array.nth(updates, i)
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if !check(update, rules_left, rules_right)
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sort_by_rules(update, rules_left, rules_right)
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out = out + array.nth(update, array.size(update) / 2)
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io.println_i64(out)
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func main[] : i64
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let data: array = io.read_file("input.txt") |> str.split("\n\n")
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let rules_left: array = []
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let rules_right: array = []
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let rules_lines: array = str.split(array.nth(data, 0), "\n")
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for i in 0..array.size(rules_lines)
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let line: str = array.nth(rules_lines, i)
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let parts: array = str.split(line, "|")
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array.push(rules_left, str.parse_i64(array.nth(parts, 0)))
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array.push(rules_right, str.parse_i64(array.nth(parts, 1)))
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let updates: array = []
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let updates_lines: array = str.split(array.nth(data, 1), "\n")
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for i in 0..array.size(updates_lines)
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let line: str = array.nth(updates_lines, i)
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let xs: array = str.split(line, ",")
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for i in 0..array.size(xs)
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array.set(xs, i, str.parse_i64(array.nth(xs, i)))
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array.push(updates, xs)
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part1(updates, rules_left, rules_right)
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part2(updates, rules_left, rules_right) |