AoC 2023 Day 13 Part 1

src/main/python/AoC2023_13.py

@@ -0,0 +1,108 @@
+#! /usr/bin/env python3
+#
+# Advent of Code 2023 Day 13
+#
+
+import sys
+
+from aoc import my_aocd
+from aoc.common import InputData
+from aoc.common import SolutionBase
+from aoc.common import aoc_samples
+from aoc.common import log
+from aoc.grid import Cell
+from aoc.grid import CharGrid
+
+Input = list[CharGrid]
+Output1 = int
+Output2 = int
+
+
+TEST = """\
+#.##..##.
+..#.##.#.
+##......#
+##......#
+..#.##.#.
+..##..##.
+#.#.##.#.
+
+#...##..#
+#....#..#
+..##..###
+#####.##.
+#####.##.
+..##..###
+#....#..#
+"""
+
+
+class Solution(SolutionBase[Input, Output1, Output2]):
+    def parse_input(self, input_data: InputData) -> Input:
+        return [
+            CharGrid.from_strings([line for line in block])
+            for block in my_aocd.to_blocks(input_data)
+        ]
+
+    def part_1(self, grids: Input) -> Output1:
+        ans = 0
+        for grid in grids:
+            h = grid.get_height()
+            w = grid.get_width()
+            for c in range(w - 1):
+                for dc in range(w - c):
+                    left = c - dc
+                    right = c + dc + 1
+                    if 0 <= left < right < w:
+                        for r in range(h):
+                            if grid.get_value(Cell(r, left)) != grid.get_value(
+                                Cell(r, right)
+                            ):
+                                break
+                        else:
+                            continue
+                        break
+                else:
+                    ans += c + 1
+                    break
+            for r in range(h - 1):
+                for dr in range(h - r):
+                    up = r - dr
+                    down = r + dr + 1
+                    if 0 <= up < down < h:
+                        for c in range(w):
+                            if grid.get_value(Cell(up, c)) != grid.get_value(
+                                Cell(down, c)
+                            ):
+                                break
+                        else:
+                            continue
+                        break
+                else:
+                    ans += 100 * (r + 1)
+                    break
+        log(ans)
+        return ans
+
+    def part_2(self, input: Input) -> Output2:
+        return 0
+
+    @aoc_samples(
+        (
+            ("part_1", TEST, 405),
+            # ("part_2", TEST, "TODO"),
+        )
+    )
+    def samples(self) -> None:
+        pass
+
+
+solution = Solution(2023, 13)
+
+
+def main() -> None:
+    solution.run(sys.argv)
+
+
+if __name__ == "__main__":
+    main()