summaryrefslogtreecommitdiff
path: root/2022/day08.py
blob: 4182d69d70f96d81bfde0c6cc856ce044523b8d1 (plain)
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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
#!/usr/bin/env python3

# import numpy as np
from functools import reduce
from re import findall
from copy import deepcopy
import sys

# filename = "in/day08.ref"
filename = "in/day08.pzl"
data = open(filename).read().rstrip('\n')
lines = [line for line in data.split('\n')]

res1 = 0
res2 = 0


y_len = len(lines)
x_len = len(lines[0])
arr = [[int(lines[y][x]) for x in range(x_len)] for y in range(y_len)]

edge_count = 2*(y_len-1) + 2*(x_len-1)
res1 += edge_count

def get_len(arr):
    if len(arr) == 0:
        return 0

    curr_max = -1
    for i,val in enumerate(arr):
        if val < curr_max:
            return i
        curr_max = max(val, curr_max)
    return i+1

def get_len2(compare, arr):
    for i,val in enumerate(arr):
        if val >= compare:
            return i+1
    return len(arr)


def slice_x(arr, y, xs, xe, s=1):
    return [arr[y][i] for i in range(xs, xe, s)]

def slice_y(arr, x, ys, ye, s=1):
    return [arr[i][x] for i in range(ys, ye, s)]

scores = list()

for y,_ in enumerate(arr):
    for x,_ in enumerate(arr[y]):
        v = arr[y][x]
        if 0 < y < y_len-1 and 0 < x < x_len-1:
            if all([v > arr[y][i] for i in range(0,x)]) or\
            all([v > arr[y][i] for i in range(x+1,x_len)]) or\
            all([v > arr[i][x] for i in range(0,y)]) or\
            all([v > arr[i][x] for i in range(y+1,y_len)]):
                res1 += 1

        mul = [
        get_len2(v, slice_x(arr, y, x+1, x_len)),
        get_len2(v, slice_x(arr, y, x-1, -1, -1)),
        get_len2(v, slice_y(arr, x, y+1, y_len)),
        get_len2(v, slice_y(arr, x, y-1, -1, -1))
        ]
        score = reduce(lambda x,y:x*y, mul)
        scores.append(score)


res2 = max(scores)

print('res1:', res1)
print('res2:', res2)