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userturkey13 sieg/heil  1yr ago (text post) 458 thread views #129718

Advent of Code 2022: Day 8

Post solutions here :marseysad: :marseyill:

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got tripped up for a long time by the dumbest stuff on this one. for the first part i was giving tlm() the wrong slices (row[i+1:] instead of row[x+1:] etc) then in the second part i was reversing the wrong slices, which annoyingly gave me the right answer for the example input

with open("day8input.txt") as f:
    input = f.read()

rows = input.split("\n")
columns = list(zip(*[row for row in rows]))

# part 1

visible = 0

def tlm(tree, slice):
    for t in slice:
        if int(t) >= int(tree):
            return False
    return True

for i, row in enumerate(rows):
    for x, column in enumerate(columns):
        tree = column[i]
        if i == 0 or x == 0 or i == len(rows) - 1 or x == len(columns) - 1:
            visible += 1
        elif tlm(tree, row[x+1:]) or tlm(tree, row[:x]) or tlm(tree, column[i+1:]) or tlm(tree, column[:i]):
            visible += 1

print(visible)

# part 2

def score(tree, slice):
    if not slice: return 0
    for i, t in enumerate(slice):
        if int(t) >= int(tree) or i == len(slice) - 1:
            return int(i) + 1


best_score = 0
for i, row in enumerate(rows):
    for x, column in enumerate(columns):
        tree = row[x]
        keffals = score(tree, row[x+1:]) * score(tree, list(reversed(row[:x]))) * score(tree, column[i+1:]) * score(tree, list(reversed(column[:i])))
        if keffals > best_score:
            best_score = keffals

print(best_score)
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first i was fricking up column definitions when looping, which made me think i was fricking up slicing. then i was fricking up view distances by feeding the wrong arrays into the wrong variables. then i was fricking up view distances both in making infinite loops and in appropriately scoring views.

:#marseycry:

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:#marseycheerup: it's so easy for your brain to turn into mush on this stuff

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>turn into

:#marseyconfused:

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Sorry ma'am, looks like his delusions have gotten worse. We'll have to admit him.

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