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path: root/15_2023.py
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import sys
import re
from copy import deepcopy
from math import gcd
from collections import defaultdict, Counter, deque

D = open(sys.argv[1]).read().strip()
L = D.split("\n")
G = [[c for c in row] for row in L]


def f(s):
    h = 0
    for c in s:
        h = ((h + ord(c)) * 17) % 256
    return h


cmds = D.split(",")

p1 = 0
for cmd in cmds:
    p1 += f(cmd)
print(p1)

BOX = [[] for _ in range(256)]
for cmd in cmds:
    if cmd[-1] == "-":
        name = cmd[:-1]
        h = f(name)
        BOX[h] = [(n, v) for (n, v) in BOX[h] if n != name]
    elif cmd[-2] == "=":
        name = cmd[:-2]
        h = f(name)
        len_ = int(cmd[-1])
        if name in [n for (n, v) in BOX[h]]:
            BOX[h] = [(n, len_ if name == n else v) for (n, v) in BOX[h]]
        else:
            BOX[h].append((name, len_))

p2 = 0
for i, box in enumerate(BOX):
    for j, (n, v) in enumerate(box):
        p2 += (i + 1) * (j + 1) * v
print(p2)