diff --git a/day22-easy/build.zig b/day22-easy/build.zig
new file mode 100644
index 0000000..c882c12
--- /dev/null
+++ b/day22-easy/build.zig
@@ -0,0 +1,70 @@
+const std = @import("std");
+
+// Although this function looks imperative, note that its job is to
+// declaratively construct a build graph that will be executed by an external
+// runner.
+pub fn build(b: *std.Build) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard optimization options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
+    // set a preferred release mode, allowing the user to decide how to optimize.
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "day22-easy",
+        // In this case the main source file is merely a path, however, in more
+        // complicated build scripts, this could be a generated file.
+        .root_source_file = .{ .path = "src/main.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // This declares intent for the executable to be installed into the
+    // standard location when the user invokes the "install" step (the default
+    // step when running `zig build`).
+    b.installArtifact(exe);
+
+    // This *creates* a Run step in the build graph, to be executed when another
+    // step is evaluated that depends on it. The next line below will establish
+    // such a dependency.
+    const run_cmd = b.addRunArtifact(exe);
+
+    // By making the run step depend on the install step, it will be run from the
+    // installation directory rather than directly from within the cache directory.
+    // This is not necessary, however, if the application depends on other installed
+    // files, this ensures they will be present and in the expected location.
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    // This allows the user to pass arguments to the application in the build
+    // command itself, like this: `zig build run -- arg1 arg2 etc`
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    // This creates a build step. It will be visible in the `zig build --help` menu,
+    // and can be selected like this: `zig build run`
+    // This will evaluate the `run` step rather than the default, which is "install".
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    // Creates a step for unit testing. This only builds the test executable
+    // but does not run it.
+    const unit_tests = b.addTest(.{
+        .root_source_file = .{ .path = "src/main.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const run_unit_tests = b.addRunArtifact(unit_tests);
+
+    // Similar to creating the run step earlier, this exposes a `test` step to
+    // the `zig build --help` menu, providing a way for the user to request
+    // running the unit tests.
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&run_unit_tests.step);
+}
diff --git a/day22-easy/easy.in b/day22-easy/easy.in
new file mode 100644
index 0000000..4704cd4
--- /dev/null
+++ b/day22-easy/easy.in
@@ -0,0 +1,1229 @@
+0,0,192~0,2,192
+4,3,209~4,3,211
+2,8,209~4,8,209
+2,0,91~3,0,91
+6,0,247~7,0,247
+8,5,22~8,8,22
+6,6,195~6,8,195
+9,2,3~9,2,5
+7,8,198~9,8,198
+4,8,35~5,8,35
+8,2,94~8,2,96
+4,5,136~6,5,136
+4,4,259~6,4,259
+1,2,95~1,4,95
+7,6,39~7,6,42
+0,6,68~0,8,68
+2,4,156~5,4,156
+8,3,175~8,6,175
+7,0,17~7,2,17
+4,8,139~8,8,139
+7,3,163~7,5,163
+7,3,72~7,5,72
+7,3,153~7,5,153
+0,8,31~0,9,31
+0,6,228~3,6,228
+1,7,11~3,7,11
+0,3,3~0,3,5
+5,4,35~5,7,35
+8,7,88~8,9,88
+4,0,252~6,0,252
+8,0,134~8,3,134
+7,6,107~7,7,107
+8,0,81~8,2,81
+2,6,246~4,6,246
+1,9,184~4,9,184
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+4,1,266~4,4,266
+7,7,231~7,9,231
+5,5,257~5,5,257
+0,1,79~1,1,79
+6,5,118~9,5,118
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+7,7,203~7,9,203
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+7,0,172~7,3,172
+7,9,210~9,9,210
+4,0,111~4,1,111
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+5,4,172~5,7,172
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+7,8,282~7,9,282
+2,0,37~3,0,37
+2,0,185~3,0,185
+1,0,167~3,0,167
+4,1,197~4,4,197
+6,9,16~6,9,19
+7,0,146~8,0,146
+5,3,112~5,4,112
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+1,7,188~1,9,188
+5,8,50~5,8,52
+3,0,6~5,0,6
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+0,4,1~1,4,1
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+0,7,234~0,9,234
+1,1,264~1,3,264
+3,7,140~6,7,140
+4,7,147~4,9,147
+3,7,100~4,7,100
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+4,0,91~4,3,91
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+2,0,249~4,0,249
+2,3,80~3,3,80
+4,6,233~4,9,233
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+7,9,57~8,9,57
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+5,4,42~5,6,42
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+6,9,78~8,9,78
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+4,1,248~7,1,248
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+8,6,250~8,6,251
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+3,2,200~5,2,200
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+9,8,255~9,9,255
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+3,7,219~6,7,219
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+8,9,211~8,9,211
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+4,0,254~6,0,254
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+9,9,231~9,9,232
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+8,3,52~8,5,52
+1,5,10~3,5,10
+8,7,70~8,9,70
+1,9,15~4,9,15
+1,8,246~3,8,246
+4,3,78~7,3,78
+4,5,92~7,5,92
+9,6,1~9,6,3
+3,2,241~5,2,241
+0,1,118~2,1,118
+0,3,45~2,3,45
+3,1,147~5,1,147
+7,9,235~9,9,235
+2,4,103~2,8,103
+5,7,32~5,8,32
+6,5,61~6,8,61
+7,6,145~9,6,145
+4,6,140~6,6,140
+7,5,124~7,8,124
+9,1,56~9,4,56
+3,7,246~4,7,246
+7,4,37~7,7,37
+0,6,229~2,6,229
+3,1,53~3,2,53
+0,6,56~0,9,56
+8,7,180~8,8,180
+4,0,104~6,0,104
+4,1,182~4,4,182
+8,0,93~8,2,93
+3,1,31~3,3,31
+3,7,72~6,7,72
+8,7,8~8,9,8
+3,4,225~3,6,225
+4,6,93~7,6,93
+6,5,120~7,5,120
+2,1,127~2,3,127
+3,3,77~6,3,77
+6,0,156~8,0,156
+0,0,4~1,0,4
+0,7,74~0,9,74
+0,2,181~2,2,181
+6,3,271~8,3,271
+2,5,116~2,7,116
+2,7,145~3,7,145
+8,9,145~8,9,145
+5,6,185~7,6,185
+4,6,39~6,6,39
+5,6,84~5,7,84
+0,0,17~0,0,18
+6,5,31~8,5,31
+6,8,128~6,8,131
+3,1,25~3,4,25
+5,0,193~5,1,193
+8,8,82~9,8,82
+1,7,108~1,8,108
+0,9,247~3,9,247
+0,2,178~3,2,178
+7,1,116~7,3,116
+0,9,34~2,9,34
+5,1,244~5,4,244
+0,1,179~2,1,179
+2,7,207~2,8,207
+9,6,26~9,6,27
+7,9,17~7,9,19
+0,3,208~0,4,208
+2,4,71~5,4,71
+3,4,113~5,4,113
+2,6,96~5,6,96
+2,0,88~4,0,88
+2,7,243~2,9,243
+5,3,28~8,3,28
+0,2,183~0,3,183
+2,5,254~5,5,254
+8,3,74~9,3,74
+3,0,19~3,2,19
+4,7,248~4,9,248
+1,2,46~4,2,46
+2,4,23~2,7,23
+6,9,202~7,9,202
+6,3,274~6,5,274
+4,2,153~4,2,155
+0,2,91~3,2,91
+3,0,106~3,2,106
+0,7,28~0,9,28
+6,3,153~6,4,153
+1,8,137~3,8,137
+6,8,5~7,8,5
+7,1,83~7,3,83
+4,0,7~6,0,7
+4,0,29~4,3,29
+5,1,185~8,1,185
+4,2,103~7,2,103
+2,8,134~2,9,134
+0,0,104~2,0,104
+2,7,14~4,7,14
+5,3,257~5,3,261
+1,3,234~2,3,234
+1,9,224~3,9,224
+4,0,37~7,0,37
+6,3,7~6,3,9
+3,5,48~3,7,48
+5,5,117~5,6,117
+4,0,174~6,0,174
+1,1,102~1,1,103
+6,4,212~6,6,212
+0,1,120~2,1,120
+0,4,251~2,4,251
+5,2,9~7,2,9
+9,4,228~9,6,228
+3,8,219~5,8,219
+6,7,36~8,7,36
+7,0,190~8,0,190
+9,4,258~9,5,258
+5,7,214~5,9,214
+0,1,86~0,4,86
+7,0,56~7,1,56
+4,2,87~6,2,87
+3,6,49~3,7,49
+4,9,66~7,9,66
+1,2,98~1,3,98
+0,3,273~1,3,273
+1,3,60~1,5,60
+0,4,133~2,4,133
+6,2,203~6,4,203
+0,0,235~2,0,235
+1,4,62~1,6,62
+6,0,188~6,2,188
+5,5,15~7,5,15
+9,0,212~9,2,212
+0,8,33~0,8,34
+0,3,47~0,5,47
+7,1,274~7,3,274
+4,7,37~4,8,37
+1,4,119~1,6,119
+3,3,269~3,4,269
+7,0,130~7,3,130
+7,3,263~7,5,263
+0,5,119~0,7,119
+5,8,7~7,8,7
+5,1,30~7,1,30
+3,3,107~4,3,107
+3,5,8~5,5,8
+8,4,119~8,6,119
+3,0,59~5,0,59
+3,8,109~6,8,109
+8,2,22~8,4,22
\ No newline at end of file
diff --git a/day22-easy/sample.in b/day22-easy/sample.in
new file mode 100644
index 0000000..158a407
--- /dev/null
+++ b/day22-easy/sample.in
@@ -0,0 +1,7 @@
+1,0,1~1,2,1
+0,0,2~2,0,2
+0,2,3~2,2,3
+0,0,4~0,2,4
+2,0,5~2,2,5
+0,1,6~2,1,6
+1,1,8~1,1,9
\ No newline at end of file
diff --git a/day22-easy/src/main.zig b/day22-easy/src/main.zig
new file mode 100644
index 0000000..2ab3752
--- /dev/null
+++ b/day22-easy/src/main.zig
@@ -0,0 +1,226 @@
+const std = @import("std");
+
+fn StackList(comptime T: type, comptime capacity_type: type, comptime capacity: capacity_type) type {
+    return struct {
+        const Self = @This();
+        mem: [capacity]T,
+        length: capacity_type,
+
+        fn add(self: *Self, value: T) void {
+            self.mem[self.length] = value;
+            self.length += 1;
+        }
+
+        fn has(self: *Self, needle: T) bool {
+            for (0..self.length) |i| {
+                if (self.mem[i] == needle) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        fn getMutableSlice(self: *Self) []T {
+            return (&self.mem)[0..self.length];
+        }
+
+        fn getSlice(self: *const Self) []const T {
+            return self.mem[0..self.length];
+        }
+
+        fn init() Self {
+            return Self{
+                .mem = undefined,
+                .length = 0,
+            };
+        }
+    };
+}
+
+fn readNumber(comptime T: type, line: []const u8, index: *usize) T {
+    var result: T = 0;
+    while (index.* < line.len) : (index.* += 1) {
+        const char = line[index.*];
+        switch (char) {
+            '0'...'9' => {
+                result = result * 10 + (char - '0');
+            },
+            else => {
+                break;
+            },
+        }
+    }
+
+    return result;
+}
+
+const Segment = packed struct(u32) {
+    first: u16,
+    last: u16,
+
+    fn init(a: u16, b: u16) Segment {
+        if (a < b) {
+            return .{
+                .first = a,
+                .last = b,
+            };
+        } else {
+            return .{
+                .first = b,
+                .last = a,
+            };
+        }
+    }
+
+    fn intersects(a: Segment, b: Segment) bool {
+        return a.first <= b.last and a.last >= b.first;
+    }
+};
+
+const Brick = struct {
+    x: Segment,
+    y: Segment,
+    z: Segment,
+    is_settled: bool,
+
+    fn is_above(self: *const Brick, other: Brick) bool {
+        return Segment.intersects(self.x, other.x) and Segment.intersects(self.y, other.y) and self.z.first > other.z.first;
+    }
+
+    fn is_on(self: *const Brick, other: Brick) bool {
+        return Segment.intersects(self.x, other.x) and Segment.intersects(self.y, other.y) and self.z.first == other.z.last + 1;
+    }
+
+    pub fn format(value: Brick, comptime _: []const u8, _: std.fmt.FormatOptions, writer: anytype) !void {
+        return writer.print("{d},{d},{d}~{d},{d},{d}", .{ value.x.first, value.y.first, value.z.first, value.x.last, value.y.last, value.z.last });
+    }
+};
+
+fn settleBrick(bricks: []Brick, this: *Brick) void {
+    if (this.is_settled) {
+        return;
+    }
+
+    var min_z: u16 = 1;
+    for (bricks) |*other| {
+        if (this.is_above(other.*)) {
+            settleBrick(bricks, other);
+            min_z = @max(min_z, other.z.last + 1);
+        }
+    }
+
+    this.z.last -= (this.z.first - min_z);
+    this.z.first = min_z;
+    this.is_settled = true;
+}
+
+fn isDisintegratable(bricks: []const Brick, this: Brick) bool {
+    for (bricks) |other| {
+        if (other.is_on(this)) {
+            var supports_number: usize = 0;
+            for (bricks) |support| {
+                if (other.is_on(support)) {
+                    supports_number += 1;
+                }
+            }
+
+            if (supports_number == 1) {
+                //std.debug.print("{any} is not disintegratable because {any} is on it\n", .{ this, other });
+                return false;
+            }
+        }
+    }
+
+    return true;
+}
+
+fn solveForBricks(bricks: []Brick) usize {
+    for (bricks) |*this| {
+        settleBrick(bricks, this);
+    }
+
+    //std.debug.print("Settled {d} bricks\n", .{bricks.len});
+    //for (bricks) |brick| {
+    //std.debug.print("{any}\n", .{brick});
+    //}
+    var result: usize = 0;
+    for (bricks) |this| {
+        if (isDisintegratable(bricks, this)) {
+            //std.debug.print("Can be disintegrated: {any}\n", .{this});
+            result += 1;
+        }
+    }
+
+    return result;
+}
+
+fn solveLines(lines: []const []const u8) usize {
+    var bricks_list = StackList(Brick, usize, 1500).init();
+
+    for (lines) |line| {
+        var i: usize = 0;
+        var x1 = readNumber(u16, line, &i);
+
+        i += 1;
+        var y1 = readNumber(u16, line, &i);
+
+        i += 1;
+        var z1 = readNumber(u16, line, &i);
+
+        i += 1;
+        var x2 = readNumber(u16, line, &i);
+
+        i += 1;
+        var y2 = readNumber(u16, line, &i);
+
+        i += 1;
+        var z2 = readNumber(u16, line, &i);
+
+        bricks_list.add(.{
+            .x = Segment.init(x1, x2),
+            .y = Segment.init(y1, y2),
+            .z = Segment.init(z1, z2),
+            .is_settled = false,
+        });
+    }
+
+    return solveForBricks(bricks_list.getMutableSlice());
+}
+
+pub fn solveAll(reader: anytype) !usize {
+    var result: usize = 0;
+    while (true) {
+        var allocator_buffer: [50000]u8 = undefined;
+        var fba = std.heap.FixedBufferAllocator.init(&allocator_buffer);
+        var allocator = fba.allocator();
+
+        var lines = StackList([]u8, usize, 1500).init();
+        var empty_line_reached = false;
+
+        var line_buffer: [1000]u8 = undefined;
+        while (try reader.readUntilDelimiterOrEof(&line_buffer, '\n')) |line| {
+            if (line.len == 0) {
+                empty_line_reached = true;
+                break;
+            }
+            lines.add(try allocator.dupe(u8, line));
+        }
+
+        result += solveLines(lines.getSlice());
+
+        if (!empty_line_reached) {
+            return result;
+        }
+    }
+}
+
+pub fn main() !void {
+    const stdout = std.io.getStdOut().writer();
+
+    const raw_in = std.io.getStdIn();
+    var buffered_reader = std.io.bufferedReader(raw_in.reader());
+    var reader = buffered_reader.reader();
+    const result = try solveAll(&reader);
+    try stdout.print("{d}\n", .{result});
+}