diff --git a/2025/d08/ex1/ex1.py b/2025/d08/ex1/ex1.py
index e97e931..11f81e5 100755
--- a/2025/d08/ex1/ex1.py
+++ b/2025/d08/ex1/ex1.py
@@ -1,8 +1,9 @@
 #!/usr/bin/env python
 
 import collections
+import functools
 import itertools
-import math
+import operator
 import sys
 from collections.abc import Iterable
 from typing import Generic, Hashable, NamedTuple, TypeVar
@@ -104,7 +105,9 @@ def solve(input: list[str]) -> int:
     circuit_sizes = collections.Counter(
         {r: len(val) for r, val in connected.sets().items()}
     )
-    return math.prod(size for _, size in circuit_sizes.most_common(3))
+    return functools.reduce(
+        operator.mul, (size for _, size in circuit_sizes.most_common(3))
+    )
 
 
 def main() -> None:
diff --git a/2025/d09/ex1/ex1.py b/2025/d09/ex1/ex1.py
deleted file mode 100755
index 3aa94f9..0000000
--- a/2025/d09/ex1/ex1.py
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/usr/bin/env python
-
-import itertools
-import sys
-from typing import NamedTuple
-
-
-class Point(NamedTuple):
-    x: int
-    y: int
-
-
-def solve(input: list[str]) -> int:
-    def parse(input: list[str]) -> list[Point]:
-        return [Point(*map(int, line.split(","))) for line in input]
-
-    def rectangle_area(p: Point, other: Point) -> int:
-        dx = abs(p.x - other.x)
-        dy = abs(p.y - other.y)
-        return (dx + 1) * (dy + 1)
-
-    tiles = parse(input)
-    return max(rectangle_area(a, b) for a, b in itertools.combinations(tiles, 2))
-
-
-def main() -> None:
-    input = sys.stdin.read().splitlines()
-    print(solve(input))
-
-
-if __name__ == "__main__":
-    main()
diff --git a/2025/d09/ex1/input b/2025/d09/ex1/input
deleted file mode 100644
index 23578e0..0000000
--- a/2025/d09/ex1/input
+++ /dev/null
@@ -1,496 +0,0 @@
-97918,50201
-97918,51425
-98247,51425
-98247,52647
-98195,52647
-98195,53859
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diff --git a/2025/d09/ex2/ex2.py b/2025/d09/ex2/ex2.py
deleted file mode 100755
index fb2d2ac..0000000
--- a/2025/d09/ex2/ex2.py
+++ /dev/null
@@ -1,149 +0,0 @@
-#!/usr/bin/env python
-
-import itertools
-import sys
-from collections.abc import Iterator
-from typing import NamedTuple
-
-
-class Point(NamedTuple):
-    x: int
-    y: int
-
-
-def solve(input: list[str]) -> int:
-    def parse(input: list[str]) -> list[Point]:
-        return [Point(*map(int, line.split(","))) for line in input]
-
-    def compression_mapping(points: list[Point]) -> dict[Point, Point]:
-        def compress_1d(values: set[int]) -> dict[int, int]:
-            return {val: i for i, val in enumerate(sorted(values))}
-
-        xs = compress_1d({p.x for p in points})
-        ys = compress_1d({p.y for p in points})
-        compress = lambda p: Point(xs[p.x], ys[p.y])
-
-        return {p: compress(p) for p in points}
-
-    def line(p1: Point, p2: Point) -> Iterator[Point]:
-        def inclusive_range_any_order(a: int, b: int) -> Iterator[int]:
-            if a < b:
-                yield from range(a, b + 1)
-            else:
-                yield from range(a, b - 1, -1)
-
-        # Hack-ish work-around to avoid infinite loops
-        if p1 == p2:
-            yield p1
-            return
-
-        xs = inclusive_range_any_order(p1.x, p2.x)
-        ys = inclusive_range_any_order(p1.y, p2.y)
-
-        if p1.x == p2.x:
-            xs = itertools.repeat(p1.x)
-
-        if p1.y == p2.y:
-            ys = itertools.repeat(p1.y)
-
-        yield from map(Point._make, zip(xs, ys))
-
-    def draw_edges(tiles: list[Point]) -> set[Point]:
-        # Close the loop by repeating the first vertex at the end
-        vertices = tiles + [tiles[0]]
-        edges = {p for a, b in itertools.pairwise(vertices) for p in line(a, b)}
-        return edges
-
-    def flood_fill(start: Point, points: set[Point]) -> set[Point]:
-        assert start in points  # Sanity check
-        visited: set[Point] = set()
-        stack = [start]
-        while stack:
-            p = stack.pop()
-            visited.add(p)
-            for dx, dy in (
-                (-1, 0),
-                (1, 0),
-                (0, -1),
-                (0, 1),
-            ):
-                n = Point(p.x + dx, p.y + dy)
-                if n in visited:
-                    continue
-                if n not in points:
-                    continue
-                stack.append(n)
-        return visited
-
-    def fill_tiles(tiles: list[Point]) -> set[Point]:
-        # I'm too lazy to find an interior point to flood-fill to the edges from,
-        # instead fill the exterior and invert the set
-        min_x, max_x = min(p.x for p in tiles), max(p.x for p in tiles)
-        min_y, max_y = min(p.y for p in tiles), max(p.y for p in tiles)
-
-        # Keep a border all around to make sure the flood-fill can reach everywhere
-        all_points = {
-            Point(x, y)
-            for x in range(min_x - 1, max_x + 1 + 1)
-            for y in range(min_y - 1, max_y + 1 + 1)
-        }
-
-        edges = draw_edges(tiles)
-
-        # Pick a corner we know for sure won't be in the polygon
-        start = Point(min_x - 1, min_y - 1)
-
-        # Sever the points inside and outside the polygon, then flood-fill exterior
-        exterior = flood_fill(start, all_points - edges)
-
-        # Return interior/edge points by removing everything that is on the exterior
-        return all_points - exterior
-
-    def rectangle_edges(p: Point, other: Point) -> Iterator[Point]:
-        min_x, max_x = min(p.x, other.x), max(p.x, other.x)
-        min_y, max_y = min(p.y, other.y), max(p.y, other.y)
-
-        c1 = Point(min_x, min_y)
-        c2 = Point(max_x, min_y)
-        c3 = Point(max_x, max_y)
-        c4 = Point(min_x, max_y)
-
-        yield from line(c1, c2)
-        yield from line(c2, c3)
-        yield from line(c3, c4)
-        yield from line(c4, c1)
-
-    def rectangle_area(p: Point, other: Point) -> int:
-        dx = abs(p.x - other.x)
-        dy = abs(p.y - other.y)
-        return (dx + 1) * (dy + 1)
-
-    def inscribed_rectangles(tiles: list[Point]) -> Iterator[tuple[Point, Point]]:
-        inside_tiles = fill_tiles(tiles)
-        yield from (
-            (a, b)
-            for a, b in itertools.combinations(tiles, 2)
-            if all(p in inside_tiles for p in rectangle_edges(a, b))
-        )
-
-    def largest_rectangle_area(tiles: list[Point]) -> int:
-        to_compressed = compression_mapping(tiles)
-        decompress = {v: k for k, v in to_compressed.items()}.__getitem__
-        compressed_tiles = [to_compressed[p] for p in tiles]
-        compressed_rectangles = inscribed_rectangles(compressed_tiles)
-        return max(
-            rectangle_area(decompress(a), decompress(b))
-            for a, b in compressed_rectangles
-        )
-
-    tiles = parse(input)
-    return largest_rectangle_area(tiles)
-
-
-def main() -> None:
-    input = sys.stdin.read().splitlines()
-    print(solve(input))
-
-
-if __name__ == "__main__":
-    main()
diff --git a/2025/d09/ex2/input b/2025/d09/ex2/input
deleted file mode 100644
index 23578e0..0000000
--- a/2025/d09/ex2/input
+++ /dev/null
@@ -1,496 +0,0 @@
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-40129,97025
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-36561,96227
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