AdventOfCode2021/day2.py at master · HenrikSZ/AdventOfCode2021 · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
###############################################################################
# Day 2, Task 1                                                               #
###############################################################################

horizontal = 0
vertical = 0

with open("data_day2.txt") as f:
    for l in f:
        [direction, amount] = l.split(" ")
        amount = int(amount)

        if direction == "forward":
            horizontal += amount
        elif direction == "down":
            vertical += amount
        elif direction == "up":
            vertical -= amount

print(horizontal * vertical)


###############################################################################
# Day 2, Task 2                                                               #
###############################################################################

horizontal = 0
vertical = 0
aim = 0

with open("data_day2.txt") as f:
    for l in f:
        [direction, amount] = l.split(" ")
        amount = int(amount)

        if direction == "forward":
            horizontal += amount
            vertical += aim * amount
        elif direction == "down":
            aim += amount
        elif direction == "up":
            aim -= amount

print(horizontal * vertical)