import ./common, std/[strutils, sequtils, strformat, sugar, sets, math, algorithm, tables] const p = {'(': ')', '[': ']', '{': '}', '<': '>'}.toTable() const t = {')': 3, ']': 57, '}': 1197, '>': 25137}.toTable() proc p1(s: seq[string]): int = var stack: seq[char] = @[] for l in s: for c in l: if p.hasKey(c): stack.add(p[c]) else: if stack.pop() != c: result += t[c] echo result const v = {')': 1, ']': 2, '}': 3, '>': 4}.toTable() proc p2(s: seq[string]): int = var scores: seq[int] = @[] for l in s: var score = 0 var stack: seq[char] = @[] for c in l: if p.hasKey(c): stack.add(p[c]) else: if stack.pop() != c: score = -1 break if score == -1: continue echo stack for l in stack.reversed(): score *= 5 score += v[l] echo score scores.add(score) scores.sort() echo scores result = scores[(scores.len() div 2)] echo result doDay(10, (n) => n.loadInput(), p1, p2, """[({(<(())[]>[[{[]{<()<>> [(()[<>])]({[<{<<[]>>( {([(<{}[<>[]}>{[]{[(<()> (((({<>}<{<{<>}{[]{[]{} [[<[([]))<([[{}[[()]]] [{[{({}]{}}([{[{{{}}([] {<[[]]>}<{[{[{[]{()[[[] [<(<(<(<{}))><([]([]() <{([([[(<>()){}]>(<<{{ <{([{{}}[<[[[<>{}]]]>[]]""".split('\n'), 26397, 288957)