84 lines
1.9 KiB
Python
84 lines
1.9 KiB
Python
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#!/usr/bin/env python3
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import sys
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input_file = sys.argv[1]
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with open(input_file) as fd:
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lines = [line.rstrip() for line in fd.readlines()]
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height = len(lines)
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width = len(lines[0])
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visited: set[tuple[int, int]] = set()
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directions = [
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(0, 1),
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(0, -1),
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(1, 0),
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(-1, 0),
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]
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def get_region(
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pos: tuple[int, int], region: set[tuple[int, int]]
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) -> set[tuple[int, int]]:
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region.add(pos)
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i, j = pos
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ochar = lines[i][j]
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for direction in directions:
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i, j = pos[0] + direction[0], pos[1] + direction[1]
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if i not in range(height) or j not in range(width):
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continue
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if (i, j) in region:
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continue
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char = lines[i][j]
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if char != ochar:
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continue
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region |= get_region((i, j), region)
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return region
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def get_perimeter(region: set[tuple[int, int]]) -> int:
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peri = 0
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for axis in (0, 1):
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oaxis = 0 if axis else 1
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iss = set([pos[axis] for pos in region])
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print(47, iss, peri)
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for i in iss:
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line = [pos[oaxis] for pos in region if pos[axis] == i]
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line.sort()
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last_j = None
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for j in line:
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if last_j is None:
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peri += 1
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elif last_j == j - 1:
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pass
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else:
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peri += 2
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last_j = j
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if last_j is not None:
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peri += 1
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print(62, i, peri, line)
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return peri
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tprice = 0
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for i in range(height):
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for j in range(width):
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pos = i, j
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if pos in visited:
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continue
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region = get_region(pos, set())
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visited |= region
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area = len(region)
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peri = get_perimeter(region)
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price = area * peri
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tprice += price
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char = lines[i][j]
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print(f"{char}: {area} × {peri} = {price}$")
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print(tprice)
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