aoc

Advent of Code
git clone https://git.pngu.org/aoc
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2_2021.py (474B)

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import sys

data = sys.argv[1] if len(sys.argv) > 1 else "../day2data.txt"
fwd1 = 0
depth1 = 0
fwd2 = 0
depth2 = 0
aim = 0

for line in open(data):
    cmd, amt = line.split()
    amt = int(amt)
    if cmd == "forward":
        fwd1 += amt
        fwd2 += amt
        depth2 += amt * aim
    elif cmd == "up":
        depth1 -= amt
        aim -= amt
    else:
        assert cmd == "down"
        depth1 += amt
        aim += amt

print(fwd1 * depth1)
print(fwd2 * depth2)