diff --git a/README.md b/README.md
deleted file mode 100644
index 4e39aa0..0000000
--- a/README.md
+++ /dev/null
@@ -1,16 +0,0 @@
-# Advent of Code 2025
-
-| Day | Part 1 | Part 2 |
-| --- | ------ | ------ |
-|   1 |    [x] |    [x] |
-|   2 |    [x] |    [x] |
-|   3 |    [x] |    [x] |
-|   4 |    [x] |    [x] |
-|   5 |    [x] |    [x] |
-|   6 |    [x] |    [x] |
-|   7 |    [x] |    [x] |
-|   8 |    [ ] |    [ ] |
-|   9 |    [x] |    [x] |
-|  10 |    [x] |    [ ] |
-|  11 |    [x] |    [x] |
-|  12 |    [ ] |    [ ] |
diff --git a/flake.nix b/flake.nix
index 6649f39..e668d05 100644
--- a/flake.nix
+++ b/flake.nix
@@ -17,7 +17,6 @@
         nativeBuildInputs = with pkgs; [
           zig
           zls
-          hyperfine
         ];
 
         buildInputs = with pkgs; [];
diff --git a/src/days/day08.zig b/src/days/day08.zig
index 20383ea..87a7c79 100644
--- a/src/days/day08.zig
+++ b/src/days/day08.zig
@@ -1,7 +1,165 @@
 const std = @import("std");
 
-pub const title = "Day 08";
+pub const title = "Day 08: Playground";
 
-pub fn run(_: std.mem.Allocator) !void {
+pub fn run(allocator: std.mem.Allocator) !void {
+    //const input = @embedFile("./input/day08.txt");
+    const input =
+        \\162,817,812
+        \\57,618,57
+        \\906,360,560
+        \\592,479,940
+        \\352,342,300
+        \\466,668,158
+        \\542,29,236
+        \\431,825,988
+        \\739,650,466
+        \\52,470,668
+        \\216,146,977
+        \\819,987,18
+        \\117,168,530
+        \\805,96,715
+        \\346,949,466
+        \\970,615,88
+        \\941,993,340
+        \\862,61,35
+        \\984,92,344
+        \\425,690,689
+        ;
+
+    var lines = std.mem.tokenizeScalar(u8, input, '\n');
+
+    var junction_boxes: std.ArrayList(JunctionBox) = .empty;
+    defer junction_boxes.deinit(allocator);
+
+    var junction_box_index: usize = 0;
+    while (lines.next()) |line| {
+        defer junction_box_index += 1;
+
+        var coordinates = std.mem.tokenizeScalar(u8, line, ',');
+        const x = blk: {
+            const s = coordinates.next() orelse continue;
+            break :blk try std.fmt.parseUnsigned(u32, s, 10);
+        };
+        const y = blk: {
+            const s = coordinates.next() orelse continue;
+            break :blk try std.fmt.parseUnsigned(u32, s, 10);
+        };
+        const z = blk: {
+            const s = coordinates.next() orelse continue;
+            break :blk try std.fmt.parseUnsigned(u32, s, 10);
+        };
+        const junction_box = JunctionBox{
+            .index = junction_box_index,
+            .position = .{ .v = .{ x, y, z } },
+        };
+        std.debug.print("{f}\n", .{junction_box});
+
+        try junction_boxes.append(allocator, junction_box);
+    }
+
+    var possible_connections: std.ArrayList(Connection) = .empty;
+    defer possible_connections.deinit(allocator);
+    var connection_index: usize = 0;
+    for (junction_boxes.items, 0..) |junction_box, i| {
+        for (junction_boxes.items[i + 1..]) |other_junction_box| {
+            defer connection_index += 1;
+
+            const length = junction_box.position.distance(other_junction_box.position);
+            const connection = Connection{
+                .index = connection_index,
+                .from = junction_box,
+                .to = other_junction_box,
+                .length = length,
+            };
+            std.debug.print("{f}\n", .{connection});
+
+            try possible_connections.append(allocator, connection);
+        }
+    }
+
+    std.mem.sort(Connection, possible_connections.items, {}, struct {
+        fn f(_: void, lhs: Connection, rhs: Connection) bool {
+            return lhs.length < rhs.length;
+        }
+    }.f);
+
+    var network_id: usize = 0;
+    for (possible_connections.items, 0..) |*connection, i| {
+        var connection_network_id = network_id;
+        for (possible_connections.items) |other_connection| {
+            if (connection.index == other_connection.index) {
+                continue;
+            }
+            if (other_connection.network == null) {
+                continue;
+            }
+            if (connection.connected(other_connection)) {
+                connection_network_id = other_connection.network.?;
+            }
+        }
+
+        connection.network = connection_network_id;
+        if (connection_network_id == network_id) {
+            network_id += 1;
+        }
+
+        std.debug.print("{f}\n", .{connection});
+
+        if (i >= 10) {
+            break;
+        }
+    }
 }
 
+const Connection = struct {
+    index: usize,
+    from: JunctionBox,
+    to: JunctionBox,
+    length: u32,
+    network: ?usize = null,
+
+    const Self = @This();
+
+    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
+        try w.print("({d}) {d} to {d}, length = {d}, network = {?d}", .{self.index, self.from.index, self.to.index, self.length, self.network});
+    }
+
+    pub fn connected(self: Self, other: Self) bool {
+        if (self.from.index == other.from.index) return true;
+        if (self.to.index == other.from.index) return true;
+        if (self.from.index == other.to.index) return true;
+        if (self.to.index == other.to.index) return true;
+        return false;
+    }
+};
+
+const JunctionBox = struct {
+    index: usize,
+    position: Position,
+
+    const Self = @This();
+
+    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
+        try w.print("({d}) {f}", .{self.index, self.position});
+    }
+};
+
+const Position = struct {
+    v: @Vector(3, u32),
+
+    const Self = @This();
+
+    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
+        try w.print("{d}, {d}, {d}", .{self.v[0], self.v[1], self.v[2]});
+    }
+
+    pub fn distance(self: Self, other: Self) u32 {
+        const comp = self.v < other.v;
+        const low = @select(u32, comp, self.v, other.v);
+        const high = @select(u32, !comp, self.v, other.v);
+        const diff = high - low;
+        return std.math.sqrt(@reduce(.Add, diff * diff));
+    }
+};
+
diff --git a/src/days/day09.zig b/src/days/day09.zig
index c167255..5b8cfab 100644
--- a/src/days/day09.zig
+++ b/src/days/day09.zig
@@ -1,242 +1,7 @@
 const std = @import("std");
 
-pub const title = "Day 09: Movie Theater";
+pub const title = "Day 09";
 
-pub fn run(allocator: std.mem.Allocator) !void {
-    const input = @embedFile("./input/day09.txt");
-    //const input =
-    //    \\7,1
-    //    \\11,1
-    //    \\11,7
-    //    \\9,7
-    //    \\9,5
-    //    \\2,5
-    //    \\2,3
-    //    \\7,3
-    //    ;
-
-    var lines = std.mem.tokenizeScalar(u8, input, '\n');
-
-    var tiles: std.ArrayList(Tile) = .empty;
-    defer tiles.deinit(allocator);
-
-    std.debug.print("parsing tiles...\n", .{});
-    var index: usize = 0;
-    while (lines.next()) |line| {
-        defer index += 1;
-        var coordinates = std.mem.tokenizeScalar(u8, line, ',');
-        const x = blk: {
-            const s = coordinates.next() orelse continue;
-            break :blk try std.fmt.parseUnsigned(u64, s, 10);
-        };
-        const y = blk: {
-            const s = coordinates.next() orelse continue;
-            break :blk try std.fmt.parseUnsigned(u64, s, 10);
-        };
-        try tiles.append(allocator, .{ .index = index, .pos = .{ x, y } });
-    }
-
-    std.debug.print("calculating edges...\n", .{});
-    var edges: std.ArrayList(Edge) = .empty;
-    defer edges.deinit(allocator);
-    for (tiles.items, 0..) |tile, i| {
-        const a = tile;
-        const b = if (i == tiles.items.len - 1) tiles.items[0] else tiles.items[i + 1];
-        try edges.append(allocator, Edge.fromTiles(a, b));
-    }
-
-    std.debug.print("finding largest rectangle...\n", .{});
-    var largest_area: usize = 0;
-    var largest_rectangle: Rectangle = undefined;
-    for (tiles.items, 0..) |first_tile, i| {
-        inner: for (tiles.items[i + 1..]) |second_tile| {
-            const rectangle = first_tile.rectangle(second_tile);
-
-            std.debug.print("checking rectangle {f}...\n", .{rectangle});
-
-            const has_inside = rectangle.width() >= 3 and rectangle.height() >= 3;
-            if (has_inside) {
-                const one: @Vector(2, u64) = @splat(1);
-                const top_left = rectangle.topLeft() + one;
-                const bottom_right = rectangle.bottomRight() - one;
-                edge_loop: for (edges.items) |edge| {
-                    if (edge.direction == .horizontal) {
-                        if (edge.a.pos[1] < top_left[1] or edge.a.pos[1] > bottom_right[1]) {
-                            continue :edge_loop;
-                        }
-
-                        const start, const end = if (edge.a.pos[0] < edge.b.pos[0] + 1) .{ edge.a.pos[0], edge.b.pos[0] } else .{ edge.b.pos[0], edge.a.pos[0] + 1 };
-                        for (start..end) |ex| {
-                            const edge_tile: @Vector(2, u64) = .{ ex, edge.a.pos[1] };
-                            if (top_left[0] <= edge_tile[0] and edge_tile[0] <= bottom_right[0]) {
-                                std.debug.print("rectangle {f} hits edge {f}\n", .{rectangle, edge});
-                                continue :inner;
-                            }
-                        }
-                    } else {
-                        if (edge.a.pos[0] < top_left[0] or edge.a.pos[0] > bottom_right[0]) {
-                            continue :edge_loop;
-                        }
-
-                        const start, const end = if (edge.a.pos[1] < edge.b.pos[1] + 1) .{ edge.a.pos[1], edge.b.pos[1] } else .{ edge.b.pos[1], edge.a.pos[1] + 1 };
-                        for (start..end) |ey| {
-                            const edge_tile: @Vector(2, u64) = .{ edge.a.pos[0], ey };
-                            if (top_left[1] <= edge_tile[1] and edge_tile[1] <= bottom_right[1]) {
-                                std.debug.print("rectangle {f} hits edge {f}\n", .{rectangle, edge});
-                                continue :inner;
-                            }
-                        }
-                    }
-                }
-            }
-
-            const area = rectangle.area();
-            if (area > largest_area) {
-                largest_area = area;
-                largest_rectangle = rectangle;
-            }
-        }
-    }
-
-    std.debug.print("rectangle = {f}\n", .{largest_rectangle});
-    std.debug.print("top_left = {any}, bottom_right = {any}\n", .{largest_rectangle.topLeft(), largest_rectangle.bottomRight()});
-
-    var buffer: [64]u8 = undefined;
-    var stdout_writer = std.fs.File.stdout().writer(&buffer);
-    const stdout = &stdout_writer.interface;
-
-    try stdout.print("{d}\n", .{largest_area});
-
-    try stdout.flush();
+pub fn run(_: std.mem.Allocator) !void {
 }
 
-const Tile = struct {
-    index: usize,
-    pos: @Vector(2, u64),
-
-    const Self = @This();
-
-    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
-        try w.print("{d},{d}", .{self.pos[0], self.pos[1]});
-    }
-
-    pub fn rectangle(self: Self, other_corner: Self) Rectangle {
-        return Rectangle.fromTiles(self, other_corner);
-    }
-};
-
-const Edge = struct {
-    a: Tile,
-    b: Tile,
-
-    direction: Direction,
-
-    const Self = @This();
-
-    const Direction = enum {
-        horizontal,
-        vertical,
-    };
-
-    pub fn fromTiles(a: Tile, b: Tile) Self {
-        const direction: Direction = if (a.pos[0] == b.pos[0])
-            .vertical
-        else if (a.pos[1] == b.pos[1])
-            .horizontal
-        else
-            unreachable;
-
-        return .{
-            .a = a,
-            .b = b,
-            .direction = direction,
-        };
-    }
-
-    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
-        try w.print("{f} - {f}", .{self.a, self.b});
-    }
-};
-
-/// 0,0    1,0
-///  a ---- c
-///  |      |
-///  |      |
-///  d ---- b
-/// 0,1    1,1
-const Rectangle = struct {
-    a: Tile,
-    b: Tile,
-
-    c: @Vector(2, u64),
-    d: @Vector(2, u64),
-
-    const Self = @This();
-
-    pub fn fromTiles(a: Tile, b: Tile) Self {
-        const cx = if (a.pos[0] <= b.pos[0]) b.pos[0] else a.pos[0];
-        const cy = if (a.pos[1] >= b.pos[1]) a.pos[1] else b.pos[1];
-        const dx = if (a.pos[0] <= b.pos[0]) a.pos[0] else b.pos[0];
-        const dy = if (a.pos[1] >= b.pos[1]) b.pos[1] else a.pos[1];
-        return .{
-            .a = a,
-            .b = b,
-            .c = .{ cx, cy },
-            .d = .{ dx, dy },
-        };
-    }
-
-    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
-        try w.print("{d} to {d} ({f} - {d},{d} - {f} - {d},{d})", .{self.a.index, self.b.index, self.a, self.c[0], self.c[1], self.b, self.d[0], self.d[1]});
-    }
-
-    pub fn topLeft(self: Self) @Vector(2, u64) {
-        const verts = [_]@Vector(2, u64){ self.c, self.b.pos, self.d };
-        var top_left: @Vector(2, u64) = self.a.pos;
-        for (verts) |vert| {
-            const cond = vert <= top_left;
-            if (@reduce(.And, cond)) {
-                top_left = vert;
-            }
-        }
-        return top_left;
-    }
-
-    pub fn bottomRight(self: Self) @Vector(2, u64) {
-        const verts = [_]@Vector(2, u64){ self.d, self.a.pos, self.c };
-        var bottom_right: @Vector(2, u64) = self.b.pos;
-        for (verts) |vert| {
-            const cond = vert >= bottom_right;
-            if (@reduce(.And, cond)) {
-                bottom_right = vert;
-            }
-        }
-        return bottom_right;
-    }
-
-    pub fn width(self: Self) u64 {
-        const cond = self.a.pos > self.b.pos;
-        const high = @select(u64, cond, self.a.pos, self.b.pos);
-        const low = @select(u64, !cond, self.a.pos, self.b.pos);
-        const diff = high - low;
-        return diff[0] + 1;
-    }
-
-    pub fn height(self: Self) u64 {
-        const cond = self.a.pos > self.b.pos;
-        const high = @select(u64, cond, self.a.pos, self.b.pos);
-        const low = @select(u64, !cond, self.a.pos, self.b.pos);
-        const diff = high - low;
-        return diff[1] + 1;
-    }
-
-    pub fn area(self: Self) u64 {
-        const cond = self.a.pos > self.b.pos;
-        const high = @select(u64, cond, self.a.pos, self.b.pos);
-        const low = @select(u64, !cond, self.a.pos, self.b.pos);
-        const diff = high - low;
-        const one: @Vector(2, u64) = @splat(1);
-        return @reduce(.Mul, diff + one);
-    }
-};
-
diff --git a/src/days/day11.zig b/src/days/day11.zig
index 5e7686a..d16d9d5 100644
--- a/src/days/day11.zig
+++ b/src/days/day11.zig
@@ -1,120 +1,7 @@
 const std = @import("std");
 
-pub const title = "Day 11: Reactor";
+pub const title = "Day 11";
 
-pub fn run(allocator: std.mem.Allocator) !void {
-    const input = @embedFile("./input/day11.txt");
-    //const input =
-    //    \\aaa: you hhh
-    //    \\you: bbb ccc
-    //    \\bbb: ddd eee
-    //    \\ccc: ddd eee fff
-    //    \\ddd: ggg
-    //    \\eee: out
-    //    \\fff: out
-    //    \\ggg: out
-    //    \\hhh: ccc fff iii
-    //    \\iii: out
-    //    ;
-    //const input =
-    //    \\svr: aaa bbb
-    //    \\aaa: fft
-    //    \\fft: ccc
-    //    \\bbb: tty
-    //    \\tty: ccc
-    //    \\ccc: ddd eee
-    //    \\ddd: hub
-    //    \\hub: fff
-    //    \\eee: dac
-    //    \\dac: fff
-    //    \\fff: ggg hhh
-    //    \\ggg: out
-    //    \\hhh: out
-    //    ;
-
-    var lines = std.mem.tokenizeScalar(u8, input, '\n');
-
-    var devices: std.StringHashMap([][]const u8) = .init(allocator);
-    defer {
-        var outputs_iter = devices.valueIterator();
-        while (outputs_iter.next()) |value| {
-            allocator.free(value.*);
-        }
-        devices.deinit();
-    }
-
-    while (lines.next()) |line| {
-        const device = line[0..3];
-        std.debug.print("device = {s}\n", .{device});
-
-        var outputs: std.ArrayList([]const u8) = .empty;
-        defer outputs.deinit(allocator);
-
-        var outputs_iter = std.mem.tokenizeScalar(u8, line[5..], ' ');
-        while (outputs_iter.next()) |output| {
-            try outputs.append(allocator, output);
-        }
-
-        const outputs_slice = try outputs.toOwnedSlice(allocator);
-        errdefer allocator.free(outputs_slice);
-
-        try devices.put(device, outputs_slice);
-    }
-
-    var cache: std.StringHashMap(usize) = .init(allocator);
-    defer cache.deinit();
-    try cache.ensureTotalCapacity(devices.count());
-
-    const dac_to_fft = try visitOutputs("dac", "fft", devices, &cache);
-    const svr_to_fft = try visitOutputs("svr", "fft", devices, &cache);
-    cache.clearRetainingCapacity();
-
-    const to_fft = if (dac_to_fft == 0) svr_to_fft else dac_to_fft;
-
-    const dac_start = if (dac_to_fft == 0) "fft" else "svr";
-    const end_start = if (dac_to_fft == 0) "dac" else "fft";
-
-    const to_dac = try visitOutputs(dac_start, "dac", devices, &cache);
-    cache.clearRetainingCapacity();
-
-    const to_end = try visitOutputs(end_start, "out", devices, &cache);
-
-    const result = to_fft * to_dac * to_end;
-
-    var buffer: [8]u8 = undefined;
-    var stdout_writer = std.fs.File.stdout().writer(&buffer);
-    const stdout = &stdout_writer.interface;
-
-    try stdout.print("{d}\n", .{result});
-
-    try stdout.flush();
-}
-
-fn visitOutputs(
-    start: []const u8,
-    end: []const u8,
-    devices: std.StringHashMap([][]const u8),
-    cache: *std.StringHashMap(usize),
-) !usize {
-    if (cache.get(start)) |result| {
-        return result;
-    }
-
-    var paths: usize = 0;
-    const device = devices.get(start);
-    if (device) |outputs| {
-        for (outputs) |output| {
-            if (std.mem.eql(u8, output, end)) {
-                paths += 1;
-            } else {
-                paths += try visitOutputs(output, end, devices, cache);
-            }
-        }
-        try cache.put(start, paths);
-        return paths;
-    } else {
-        std.debug.print("device {s} not found\n", .{start});
-        return 0;
-    }
+pub fn run(_: std.mem.Allocator) !void {
 }
 
diff --git a/src/days/day12.zig b/src/days/day12.zig
index 354fe56..e5f9176 100644
--- a/src/days/day12.zig
+++ b/src/days/day12.zig
@@ -1,240 +1,7 @@
 const std = @import("std");
 
-pub const title = "Day 12: Christmas Tree Farm";
+pub const title = "Day 12";
 
-pub fn run(allocator: std.mem.Allocator) !void {
-    const input = @embedFile("./input/day12.txt");
-    //const input =
-    //    \\0:
-    //    \\###
-    //    \\##.
-    //    \\##.
-    //    \\
-    //    \\1:
-    //    \\###
-    //    \\##.
-    //    \\.##
-    //    \\
-    //    \\2:
-    //    \\.##
-    //    \\###
-    //    \\##.
-    //    \\
-    //    \\3:
-    //    \\##.
-    //    \\###
-    //    \\##.
-    //    \\
-    //    \\4:
-    //    \\###
-    //    \\#..
-    //    \\###
-    //    \\
-    //    \\5:
-    //    \\###
-    //    \\.#.
-    //    \\###
-    //    \\
-    //    \\4x4: 0 0 0 0 2 0
-    //    \\12x5: 1 0 1 0 2 2
-    //    \\12x5: 1 0 1 0 3 2
-    //    ;
-
-    var lines = std.mem.tokenizeScalar(u8, input, '\n');
-
-    var presents: std.ArrayList(Present) = .empty;
-    defer presents.deinit(allocator);
-
-    var regions: std.ArrayList(Region) = .empty;
-    defer {
-        for (regions.items) |region| {
-            region.deinit(allocator);
-        }
-        regions.deinit(allocator);
-    }
-
-    while (lines.next()) |line| {
-        var semicolon_pos: usize = 0;
-        var x_pos: ?usize = null;
-        for (line, 0..) |c, i| {
-            switch (c) {
-                'x' => x_pos = i,
-                ':' => {
-                    semicolon_pos = i;
-                    break;
-                },
-                else => {},
-            }
-        }
-        if (semicolon_pos != 0) {
-            if (x_pos) |p| {
-                // region
-                const width = try std.fmt.parseUnsigned(usize, line[0..p], 10);
-                const height = try std.fmt.parseUnsigned(usize, line[p + 1..semicolon_pos], 10);
-
-                var required_presents: std.ArrayList(u8) = .empty;
-                defer required_presents.deinit(allocator);
-                if (presents.items.len > 0) {
-                    try required_presents.ensureTotalCapacity(allocator, presents.items.len);
-                }
-
-                var presents_iter = std.mem.tokenizeScalar(u8, line[semicolon_pos + 2..], ' ');
-                while (presents_iter.next()) |present| {
-                    const amount = try std.fmt.parseUnsigned(u8, present, 10);
-                    try required_presents.append(allocator, amount);
-                }
-
-                const required_presents_slice = try required_presents.toOwnedSlice(allocator);
-                errdefer allocator.free(required_presents_slice);
-
-                const region: Region = .{
-                    .width = width,
-                    .height = height,
-                    .required_presents = required_presents_slice,
-                };
-                try regions.append(allocator, region);
-            } else {
-                // present
-                var present: Present = .{
-                    .shape = .initEmpty(),
-                };
-                for (0..Present.Width) |y| {
-                    const l = lines.next() orelse unreachable;
-                    for (0..Present.Width) |x| {
-                        if (l[x] == '#') {
-                            present.set(x, y);
-                        }
-                    }
-                }
-                try presents.append(allocator, present);
-            }
-        }
-    }
-
-    var accumulator: usize = 0;
-
-    for (regions.items) |region| {
-        std.debug.print("{f}\n", .{region});
-        var area_needed: usize = 0;
-        for (region.required_presents, 0..) |amount, i| {
-            area_needed += amount * presents.items[i].area();
-        }
-        if (area_needed < region.area()) {
-            std.debug.print("{f}\nfits\n", .{region});
-            accumulator += 1;
-        }
-    }
-
-    var buffer: [8]u8 = undefined;
-    var stdout_writer = std.fs.File.stdout().writer(&buffer);
-    const stdout = &stdout_writer.interface;
-
-    try stdout.print("{d}\n", .{accumulator});
-
-    try stdout.flush();
+pub fn run(_: std.mem.Allocator) !void {
 }
 
-const Present = struct {
-    shape: std.bit_set.IntegerBitSet(Width * Width),
-
-    const Width = 3;
-
-    const Self = @This();
-
-    pub fn format(self: Self, w: *std.Io.Writer) std.Io.Writer.Error!void {
-        for (0..Width) |y| {
-            for (0..Width) |x| {
-                try w.writeByte(if (self.isSet(x, y)) '#' else '.');
-            }
-            if (y < Width - 1) {
-                try w.writeByte('\n');
-            }
-        }
-    }
-
-    pub fn set(self: *Self, x: usize, y: usize) void {
-        const index = (y * Width) + x;
-        self.shape.set(index);
-    }
-
-    pub fn isSet(self: Self, x: usize, y: usize) bool {
-        const index = (y * Width) + x;
-        return self.shape.isSet(index);
-    }
-
-    pub fn area(self: Self) usize {
-        return self.shape.count();
-    }
-};
-
-const Region = struct {
-    width: usize,
-    height: usize,
-    required_presents: []u8,
-
-    const Self = @This();
-
-    pub fn deinit(self: Self, allocator: std.mem.Allocator) void {
-        allocator.free(self.required_presents);
-    }
-
-    pub fn format(self: Self, w: *std.Io.Writer) std.Io.Writer.Error!void {
-        try w.print("{d}x{d}: ", .{self.width, self.height});
-        for (self.required_presents, 0..) |present, i| {
-            try w.print("{d}", .{present});
-            if (i < self.required_presents.len - 1) {
-                try w.writeByte(' ');
-            }
-        }
-    }
-
-    pub fn createEmpty(self: Self, allocator: std.mem.Allocator) !EmptyRegion {
-        return try .init(allocator, self.width, self.height);
-    }
-
-    pub fn area(self: Self) usize {
-        return self.width * self.height;
-    }
-};
-
-const EmptyRegion = struct {
-    grid: [][]bool,
-    filled_spaces: usize,
-
-    allocator: std.mem.Allocator,
-
-    const Self = @This();
-
-    pub fn init(allocator: std.mem.Allocator, width: u8, height: u8) !Self {
-        const h = try allocator.alloc([]bool, height);
-        for (0..height) |i| {
-            const w = try allocator.alloc(u8, width);
-            @memset(w, false);
-            h[i] = w;
-        }
-        return .{
-            .grid = h,
-            .filled_spaces = 0,
-            .allocator = allocator,
-        };
-    }
-
-    pub fn deinit(self: Self) void {
-        for (self.grid) |row| {
-            self.allocator.free(row);
-        }
-        self.allocator.free(self.grid);
-    }
-
-    pub fn fits(self: Self, present: Present) bool {
-        std.debug.assert(self.grid.len > 0);
-        const size = self.grid.len * self.grid[0].len;
-        if ((size - self.filled_spaces) < present.shape.count()) {
-            return false;
-        }
-
-        // TODO: Implementation
-        return false;
-    }
-};
-
diff --git a/src/days/input/day08.txt b/src/days/input/day08.txt
new file mode 100755
index 0000000..300a2da
--- /dev/null
+++ b/src/days/input/day08.txt
@@ -0,0 +1,1000 @@
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diff --git a/src/days/input/day09.txt b/src/days/input/day09.txt
deleted file mode 100755
index 44cac4b..0000000
--- a/src/days/input/day09.txt
+++ /dev/null
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-57444,3165
-58640,3165
-58640,3456
-59812,3456
-59812,3478
-61045,3478
-61045,3412
-62316,3412
-62316,4049
-63401,4049
-63401,4368
-64572,4368
-64572,4266
-65892,4266
-65892,5403
-66775,5403
-66775,5880
-67884,5880
-67884,6132
-69090,6132
-69090,6792
-70119,6792
-70119,6784
-71472,6784
-71472,7784
-72326,7784
-72326,8026
-73577,8026
-73577,8876
-74490,8876
-74490,8978
-75860,8978
-75860,9930
-76701,9930
-76701,10352
-77896,10352
-77896,11232
-78772,11232
-78772,11817
-79867,11817
-79867,12626
-80792,12626
-80792,14062
-81171,14062
-81171,14424
-82471,14424
-82471,15055
-83557,15055
-83557,16158
-84188,16158
-84188,16772
-85314,16772
-85314,18188
-85573,18188
-85573,18598
-86957,18598
-86957,19899
-87301,19899
-87301,20942
-87937,20942
-87937,21902
-88675,21902
-88675,22692
-89662,22692
-89662,23972
-89932,23972
-89932,24741
-90987,24741
-90987,25832
-91538,25832
-91538,27127
-91708,27127
-91708,28094
-92461,28094
-92461,29086
-93191,29086
-93191,30203
-93671,30203
-93671,31293
-94211,31293
-94211,32525
-94402,32525
-94402,33715
-94665,33715
-94665,34739
-95400,34739
-95400,35775
-96158,35775
-96158,36914
-96627,36914
-96627,38153
-96733,38153
-96733,39465
-96473,39465
-96473,40509
-97404,40509
-97404,41858
-96797,41858
-96797,42955
-97601,42955
-97601,44214
-97352,44214
-97352,45389
-97756,45389
-97756,46601
-97847,46601
-97847,47809
-98021,47809
-98021,49037
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-97534,50245
diff --git a/src/days/input/day11.txt b/src/days/input/day11.txt
deleted file mode 100755
index 1c6713e..0000000
--- a/src/days/input/day11.txt
+++ /dev/null
@@ -1,609 +0,0 @@
-smx: otc
-mmh: gvp
-gbo: hyf alz
-laa: vky qjq
-vrn: tbs tsr jix
-xyl: xel eur wdj
-sxm: out
-wsd: kua hpv jep
-qsj: ulu xel eur wdj
-xwa: mtd xxf hnw
-kai: ehr kaj
-uuj: you
-owb: ixr bps pim eez ejn syt qrx hxw vsy ghl gfu cgh mpk kfj
-vky: owb wlw qic
-ysd: mkp jbf btz xgg gbk tvg iju amm dws ykz azc blh xld rpr uek rcl zzy jhu
-rbc: ski xyl sdx wpw
-zmc: pal lwb rns hex
-cuu: vyo
-bqf: kmy exx ish
-jbv: ysa
-aog: ayv kwq
-fcq: qic xss owb
-hyg: out
-xoz: llx kra cqn bzn swe tdo vnz zos duw
-gnq: eya
-qmk: fcq lyd
-ggp: brz eya
-oit: yyy quh brz
-hjl: dtj lnc jps fyr
-sqg: xbz upq
-nil: diq
-xqa: jei ipw tkt
-ond: fft jko dqj pxe
-and: ahn izm esa
-cqf: xss
-rqa: ryb rwu ono fyb
-jps: byj fmv shn
-ccg: ond afk tbu
-dta: ctq jbw whr smq
-ztx: hlm ctr vgo maf fkj
-sdx: xel eur
-xwb: dds
-clh: ktb
-rtn: quh eya
-dac: nxc vug eou
-nvh: kmf yga wtv
-xgw: kep unr lju mtm
-mdx: qmk fwk fbd
-tbu: fft dqj pxe
-vil: lyz aek
-ona: zjk ovx dmv laa
-bld: zbs
-rms: vjs znm
-oku: brz yyy
-bzn: dmc fwa ykh vrn axj
-uzl: ayv fuz qhs kwq
-bhz: ggv
-kfj: xqa ucr akl
-koi: szi
-mvo: dqp kjr rbc
-rof: vgo hlm
-ixt: jws nxc vug
-ycf: out
-dmc: tsr
-nam: mvo
-rkj: quh yyy eya brz
-qxk: uty
-lwb: phc esx
-fqf: isr dax
-eou: lqz ysd
-lbb: out
-hyf: fgh wem yen taw
-dfv: nzl
-pnh: lai
-jon: eya
-guf: shn
-lmw: hlu mhq
-jff: ngn gye
-xxj: guf dtj lnc
-fbd: fcq lyd
-idw: cmg phc
-zbs: hjl
-lqz: blh ttg ykz jhu zzy uek rcl bld xgg gbk mkp amm iju tvg
-shn: goi
-hdc: wap pvr
-odf: yey ggp jtc
-rkk: zyi ubs
-fyr: fmv vtv
-pxe: ztx mmi
-ntf: dds cst aff
-lyz: gwp
-pyt: zpv ias oiz
-cqx: rod jnp
-dtj: shn vtv
-gfu: kai ctq
-ycw: ryl ixt uut dac
-yvb: jbv rms fez
-lvx: tvz vyo
-pvr: yat
-oiz: zjk ovx dmv
-biy: tdg
-xbz: cqf
-obk: jje
-jcc: ssq daa
-elu: ihl kep lju unr
-jgf: qfx bhz
-wbp: xxj cap hjl
-nne: out
-llx: axj ykh
-kso: kuk ams
-eod: nzl aap
-ryl: nxc
-epd: eou jws ats nxc vug
-wqg: uzn yyf
-qhh: lqz
-fhu: hex idw pal
-ipt: ema
-vpo: cap xxj
-thl: azd otc
-ttg: vpo
-uty: owb qic
-brz: mdl eiw gam aog nam wqg jcc kgs nac bsk zpk kul snr uzl
-faw: out
-lzw: wlw xss owb qic
-wap: iel yat qhh paa
-ffr: vnn fiv
-nug: sqg eyp sws eai dsh icy zrp mas dmf ccg hoq qze qde cqt zvl jrq gep
-ygk: jon oit
-eya: ppx nac mdl dej
-lnc: byj fmv shn
-nhq: kjv
-biq: lav xhe vcg
-hfn: pvr ydj
-leg: oii zad jje
-fft: rof taz
-maf: qic
-aap: rkj hrs svl
-axv: esa
-zou: ulu eur xel
-jtc: yyy
-pxc: gvr dyo omt
-byj: nqz goi faw
-ykh: jix tbs tsr
-fai: cst nug aff
-oty: nhq
-cek: vvv ubs zyi
-ufu: zen
-xtk: kpg tap qzv
-kil: dds aff
-ojk: lqz
-aly: qak lqz
-xxf: aff cst dds
-yua: oit ktb rwv
-vlf: ujz
-lbw: zyi uuj
-zpk: nhp urn ctg
-kuk: you ysd qak
-tmy: esa
-sqi: quh lvi
-jrq: obk leg
-yat: lqz
-atl: zpv ias oiz ona obm
-xhe: asz jbv
-gdx: oii jje
-ssq: fqf tap kpg qzv
-quh: snr kul zpk bsk nac ufu yor dej ppx aog nam wqg eiw mdl
-bvn: luk
-zny: jon ktb rwv
-jzw: aap plm
-jqp: dac
-mpk: euv llh
-fpr: gwp zmc ulq fhu
-ahn: qtl rtn
-zyi: lqz ysd
-ypn: mtd xxf
-fgh: rkk
-vgo: xss owb wlw
-axj: jix tsr
-kgv: kpg
-gfa: ona obm zpv ias
-eur: eij vil oxs xip hsd hdc gbo laz rnq lnj nuk xck twd jqp ycw btu abg koi cey hfn
-bsk: oqd hmt kew
-wrx: tas
-jix: aff nug cst dds qvv
-blc: yan
-rwv: yyy quh eya brz
-exx: blc dks
-ujz: mwp
-yyf: xya xmb fee
-icq: mtm
-hxw: viq eod
-xii: fyb
-lyb: drx mlf pkl
-puw: ona ias
-ilj: qfx xph
-wlw: gfu ghl vlf cgh mpk yfx pbj qrx hxw jsq eez syt dta ejn bps hnj pim
-icy: xbz
-wdr: gbm kil
-svl: lvi
-dax: wdj eur
-fwa: jix tsr
-fyb: you ysd qak
-whr: ehr kaj ogx nvh
-agb: mag yan
-duw: luk yzp nil
-plg: yen taw fks wem fgh
-zrp: pyt puw qyk gfa atl
-phc: you qak lqz
-aff: qze hoq qde mdx zvl jrq sqg dsh eai zrp icy mas dmf
-ulu: lnj xck twd jqp btu ycw abg koi gqf hfn eij vil oxs xip nhi hsd hdc kku laz rnq
-ezt: nug cst qvv dds
-ccu: yyy brz eya
-nuk: zpf
-ubs: ysd
-qyk: ona oiz
-kua: wlw xss qic
-ssa: kua
-uds: ier vnn fiv
-cbw: gvr
-pln: wdj ulu
-zos: htz ilj
-viq: aap nzl
-azd: jff
-esa: rtn oku
-rzd: eya brz
-syt: euv cbo
-drx: tdg
-qjq: xss owb
-jru: aat eoy dqu
-vms: bzf gkm ffr uds
-zen: vms zuv vci
-qfx: wdr
-amm: wbp vpo evr jmb zbs
-hnj: sxp viq jzw
-vtv: goi
-kep: xnp yoh evy
-evr: cap
-gvp: yyy brz lvi eya
-kxs: rod jru uvb
-daa: jlo
-fks: lbw cek
-omt: dds
-gtx: out
-jws: lqz qak
-eoy: out
-qvv: fes dmf icy zrp eai dsh iyb sqg eyp sws gep jrq mdx zvl qfd qde qze hoq ccg
-smq: kaj
-kmy: agb
-qde: atl
-fez: znm mvj vjs
-cey: wrx ryw lbx
-ema: brz eya lvi quh yyy
-zfg: cst nug aff qvv
-pim: yip pxl ujz
-zge: lzw
-ykz: yrg bss smx
-yyy: snr zpk uzl ufu bsk dej yte kgs gam eiw wqg
-yor: kew
-cmg: lqz qak ysd
-xya: zou pln uaz
-zpv: laa
-yen: cek rkk fce iwk
-boc: eay hlu
-ygu: xya ofj
-xnp: oic zfg eft xwb
-nlb: izm
-fmv: nqz
-mag: aem wtx qrc pyc ipu
-tdo: jgf
-znm: sxm lbb
-mtm: xnp
-khk: ipt qvi
-vyo: eur wdj
-kye: out
-uvb: dqu aat yvz
-xck: lyz fpr aek arq
-acb: wtv gts
-gep: qxk upq
-ihl: xnp yoh
-eyp: qyk
-lai: qsj
-ipu: out
-isr: ulu
-qrc: out
-jhu: bqf
-eij: uut dac ryl epd
-tvg: yrg thl mvu bss
-pbj: ucr
-cst: ccg sws hoq qze dsh qde cqt
-yzp: xwa diq cft ypn
-uut: eou ats
-fee: zou
-dqj: mmi taz rof ztx
-rnq: arq aek
-yfk: yvb zzh
-lvi: jcc dej mdl gam aog nam zpk kul uzl ufu bsk nac
-tap: sxw
-jsq: dfv sxp viq jzw
-tdg: aff nug cst dds
-cgh: tmy oze nlb and
-qzv: dax
-jtn: xhe
-kjr: ski wpw sdx xyl
-ski: wdj xel
-oqd: zuv
-ppx: zen hmt kew
-vcg: jbv
-jbw: nvh
-ctg: dqp
-dcv: owb wlw qic
-kzs: rxd lai cuu lvx
-dws: bss yrg thl mvu
-ara: dds qvv cst nug aff
-ctr: owb wlw
-ctq: ehr kaj acb
-zpf: fgh fks
-pyc: out
-ras: gvr omt
-iby: xxb rqa vlx
-gam: mah ygu uzn
-ulq: idw lwb pal
-gkm: ier
-cqn: pdv elu
-tvz: ulu
-obm: laa
-btu: alz
-wtx: out
-xel: oty oxs vil eij hsd nhi hdc gbo kku lnj ycw btu jqp xck gqf hfn cey koi abg
-uxa: lwb hex rns
-yga: gnq
-ppv: lav xhe vcg
-upq: hzh cqf lzw uty
-mvu: otc exw
-yrg: otc azd
-kul: qsu xtk ssq daa kgv
-pif: mbd bzn mzo xhj wee jdf
-xhy: wus khk mwp
-ehr: wtv gts yga
-fes: zge
-rwu: you qak ysd lqz
-hnw: cst
-goi: out
-hsd: alz zpf amk
-hzh: wlw xss qic
-lbs: vlx rqa
-dds: mdx zvl qde qfd qze jrq zrp icy iyb dsh eyp sqg fes dmf mas
-tsh: hpv kua
-svr: xoz lak pif ryf dyv
-gua: hlu
-jei: jtc ggp
-wpw: xel eur wdj ulu
-jbf: biq jtn hut ppv yfk
-hoq: qmk fwk cxr fbd
-blh: evr vpo zbs jmb
-mas: gdx
-afk: jko pxe
-zzy: lmw boc
-vsy: tmy oze axv and
-htz: xph qfx bhz
-yte: mah ygu uzn rcr
-zuv: bzf gkm ffr uds
-yvz: out
-ejn: dok llh euv
-jlo: dax isr
-qvi: gvp ema rzd
-mdl: mah
-wdj: hfn gqf cey koi jqp twd lnj rnq gbo kku hdc hsd oty vil eij abg ycw btu xck nuk nhi oxs
-ias: dmv zjk ovx
-laz: nhq
-ish: blc
-pkl: ezt ara
-xhj: elu
-tlp: ais
-mux: zrm uvb
-vci: bzf gkm uds
-nie: wtx aem qrc
-ike: wdj xel ulu
-abg: pvr wap
-ono: lqz
-yip: khk
-oze: ahn izm
-lak: bvn mbd llx xhj lyb pxo
-dmf: obk leg
-wus: ipt qvi
-oic: nug cst qvv dds
-rpr: ifc fjg mfu
-vvv: qak
-qtl: lvi brz quh yyy
-rqt: pdv icq
-yoh: eft ntf oic
-aby: nug dds
-yfx: axv tmy
-xmb: uaz pln
-hrs: brz quh yyy
-eez: llh cbo
-lyd: qic owb xss wlw
-dyo: dds qvv aff cst nug
-evy: xwb eft ntf
-plv: esz ktb jon
-luk: xwa ypn
-nqz: out
-ier: wdj eur ulu
-yey: quh eya lvi brz
-otc: svv tlp jff
-qze: leg gdx obk
-aek: gwp ulq
-mah: xmb fee xya
-pxl: khk xux wus
-wem: iwk cek lbw rkk
-nhi: uut ryl epd
-cui: out
-qak: ykz xmj jbf rpr xgg blh
-qwm: eya lvi brz quh
-dsh: zge qxk upq xbz
-hmt: zuv
-bss: azd otc
-rxd: vyo qsj
-eay: uhs mux kxs
-vnn: ulu wdj eur xel
-iju: ckk lmw gua
-fiv: wdj eur xel ulu
-izm: rtn oku
-xld: fjg mfu ifc
-xph: ggv nqb
-ija: rxd cuu
-tsr: nug cst aff dds qvv
-uaz: ulu wdj eur
-ats: lqz you qak ysd
-cft: xxf aby
-taw: iwk cek lbw rkk
-rns: ojk phc
-qic: vlf eez cgh yfx dta syt bps hnj jsq
-gqf: zpf amk plg hyf
-ryb: qak
-tbs: nug aff qvv dds
-gbk: yfk
-eiw: mvo ctg urn abp
-kpg: sxw isr
-pal: phc ojk esx
-ais: nne hyg kye ycf
-fjg: kmy
-uzn: fee xmb
-hpv: owb xss wlw qic
-hlu: mux cqx
-azc: ckk lmw boc
-dqp: xyl ike
-aat: out
-fuz: srk pnh ija
-ypw: jgf
-pdv: kep
-dmv: qjq vky
-fya: llv iby lbs
-plm: rkj
-xux: ipt qvi mmh
-gye: kye gme
-zzh: fez asz rms
-snr: ayv fuz qhs
-ydj: qhh akg paa
-rcr: ofj fee xmb xya
-kaj: wtv kmf yga
-lju: yoh evy
-ebo: sqi jtc yey
-vlx: rwu ryb ono
-tas: xxb xii
-wee: pdv xgw
-fkj: owb wlw
-xro: ilj htz jgf
-hum: lqz ysd
-kku: bsy aek lyz
-euv: clh plv yua ygk
-akl: ebo jei tkt odf
-lnj: fya lbx
-lbx: iby lbs
-mhq: cqx uhs
-hut: vcg zzh
-szi: mnj ams
-ysa: sxm rni lbb
-vug: you
-llh: ygk yua zny plv clh
-nzl: hrs
-uek: mvu
-mmi: maf vgo hlm
-eft: dds cst
-dok: zny yua clh plv
-kmf: npf lef nsp
-mnj: you qak ysd lqz
-paa: qak you
-ghl: xhy
-ggv: kil gbm fai lvh
-jje: ssa
-jko: mmi
-srk: rxd
-yan: ipu
-nxc: lqz you qak
-gts: qwm npf lef gnq
-qrx: kai smq whr
-ovx: oiw
-unr: evy xnp
-kew: vms vci
-sxp: aap
-oii: tsh wsd
-cbo: ygk clh
-xip: wrx lbx
-sws: ond tbu
-abp: rbc
-tkt: ccu ggp
-diq: xxf mtd hnw
-gvr: nug cst
-ipw: jtc ccu
-arq: uxa gwp ulq
-iwk: vvv uuj aly zyi
-mfu: exx kmy
-dks: nie mag
-twd: fpr lyz arq bsy
-fwk: lyd
-jnp: eoy aat
-nsp: brz eya yyy
-xss: vsy bps ixr hxw syt pbj kfj gfu
-nac: kgv xtk qsu
-oiw: qic xss owb wlw
-svv: ais gye
-mtd: cst dds qvv
-ixr: and nlb axv
-jdf: pxc cbw
-dyv: dea wnr xro ypw xlu
-qfd: afk ond
-wtv: qwm nsp
-xxb: rwu ryb fyb ono
-wnr: xgw elu
-uhs: uvb zrm jnp rod jru
-asz: mvj vjs
-eai: gfa puw
-ofj: uaz
-vnz: pkl
-kgs: mvo urn abp ctg
-fce: ubs uuj vvv
-pxo: vrn fwa dmc ykh
-cxr: lyd fcq dcv
-xgg: ifc
-mzo: biy pkl mlf
-gwp: pal idw rns hex
-you: dws amm iju tvg bld xgg jbf btz mkp jhu uek blh xld ykz ttg azc
-jep: wlw xss
-nqb: lvh
-zrm: yvz eoy aat cui
-zmm: odf ipw jei
-kjv: qak ysd
-akg: you ysd lqz
-lvh: qvv dds aff cst
-ogx: gts yga
-urn: kjr rbc
-bsy: uxa fhu zmc gwp ulq
-lav: asz fez
-exw: svv
-esz: lvi
-sxw: eur xel
-ams: lqz
-qsu: fqf kpg tap
-bps: akl zmm xqa
-ayv: srk pnh ija kzs
-gme: out
-oxs: szi nhq kso
-hex: esx hum ojk cmg phc
-xlu: luk
-aem: out
-mlf: ara
-kwq: srk pnh kzs
-jmb: xxj cap
-dqu: out
-iel: ysd
-ucr: ipw
-cqt: fbd qmk fwk
-nhp: dqp kjr
-ifc: ish
-llv: rqa xii xxb
-dea: luk yzp nil
-ngn: nne gme ycf hyg
-ryf: xlu rqt swe bvn lyb duw cqn bzn jdf wnr wee ypw pxo vnz xhj zos
-lef: brz quh
-mbd: pxc
-cap: dtj guf
-rcl: wbp evr vpo jmb
-zvl: fbd cxr fwk
-btz: lmw gua
-ktb: brz yyy
-taz: ctr hlm vgo fkj
-mkp: jtn hut yfk ppv
-iyb: afk tbu
-gbm: nug dds
-swe: ras
-ckk: hlu eay
-rni: out
-bzf: fiv
-qhs: ija
-rod: yvz
-amk: yen taw
-vjs: rni sxm
-hlm: owb xss
-zjk: oiw
-mvj: gtx rni
-ryw: iby llv
-npf: quh brz lvi
-zad: ssa tsh
-esx: lqz ysd
-mwp: mmh
-alz: wem yen
-kra: luk nil
-xmj: smx
-dej: kew
diff --git a/src/days/input/day12.txt b/src/days/input/day12.txt
deleted file mode 100755
index 6b6eac1..0000000
--- a/src/days/input/day12.txt
+++ /dev/null
@@ -1,1030 +0,0 @@
-0:
-..#
-.##
-###
-
-1:
-###
-.##
-.##
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