diff --git a/.gitignore b/.gitignore
index 7e99e36..d8a6d46 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
-*.pyc
\ No newline at end of file
+*.pyc
+.zig-cache
+zig-out/
\ No newline at end of file
diff --git a/src/day1.py b/python/day1.py
similarity index 100%
rename from src/day1.py
rename to python/day1.py
diff --git a/src/utils/load.py b/python/utils/load.py
similarity index 100%
rename from src/utils/load.py
rename to python/utils/load.py
diff --git a/zig/build.zig b/zig/build.zig
new file mode 100644
index 0000000..ea42a43
--- /dev/null
+++ b/zig/build.zig
@@ -0,0 +1,59 @@
+const std = @import("std");
+
+// Although this function looks imperative, it does not perform the build
+// directly and instead it mutates the build graph (`b`) that will be then
+// executed by an external runner. The functions in `std.Build` implement a DSL
+// for defining build steps and express dependencies between them, allowing the
+// build runner to parallelize the build automatically (and the cache system to
+// know when a step doesn't need to be re-run).
+pub fn build(b: *std.Build) void {
+    // Standard target options allow 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(.{});
+    // It's also possible to define more custom flags to toggle optional features
+    // of this build script using `b.option()`. All defined flags (including
+    // target and optimize options) will be listed when running `zig build --help`
+    // in this directory.
+
+    const exe = b.addExecutable(.{
+        .name = "zig",
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/main.zig"),
+            .target = target,
+            .optimize = optimize,
+            .imports = &.{},
+        }),
+    });
+
+    b.installArtifact(exe);
+
+    const run_step = b.step("run", "Run the app");
+
+    const run_cmd = b.addRunArtifact(exe);
+    run_step.dependOn(&run_cmd.step);
+
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const exe_tests = b.addTest(.{
+        .root_module = exe.root_module,
+    });
+
+    // A run step that will run the second test executable.
+    const run_exe_tests = b.addRunArtifact(exe_tests);
+
+    // A top level step for running all tests. dependOn can be called multiple
+    // times and since the two run steps do not depend on one another, this will
+    // make the two of them run in parallel.
+    const test_step = b.step("test", "Run tests");
+    test_step.dependOn(&run_exe_tests.step);
+}
diff --git a/zig/build.zig.zon b/zig/build.zig.zon
new file mode 100644
index 0000000..014bd18
--- /dev/null
+++ b/zig/build.zig.zon
@@ -0,0 +1,81 @@
+.{
+    // This is the default name used by packages depending on this one. For
+    // example, when a user runs `zig fetch --save <url>`, this field is used
+    // as the key in the `dependencies` table. Although the user can choose a
+    // different name, most users will stick with this provided value.
+    //
+    // It is redundant to include "zig" in this name because it is already
+    // within the Zig package namespace.
+    .name = .zig,
+    // This is a [Semantic Version](https://semver.org/).
+    // In a future version of Zig it will be used for package deduplication.
+    .version = "0.0.0",
+    // Together with name, this represents a globally unique package
+    // identifier. This field is generated by the Zig toolchain when the
+    // package is first created, and then *never changes*. This allows
+    // unambiguous detection of one package being an updated version of
+    // another.
+    //
+    // When forking a Zig project, this id should be regenerated (delete the
+    // field and run `zig build`) if the upstream project is still maintained.
+    // Otherwise, the fork is *hostile*, attempting to take control over the
+    // original project's identity. Thus it is recommended to leave the comment
+    // on the following line intact, so that it shows up in code reviews that
+    // modify the field.
+    .fingerprint = 0xc1ce10815a5d4f65, // Changing this has security and trust implications.
+    // Tracks the earliest Zig version that the package considers to be a
+    // supported use case.
+    .minimum_zig_version = "0.15.2",
+    // This field is optional.
+    // Each dependency must either provide a `url` and `hash`, or a `path`.
+    // `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
+    // Once all dependencies are fetched, `zig build` no longer requires
+    // internet connectivity.
+    .dependencies = .{
+        // See `zig fetch --save <url>` for a command-line interface for adding dependencies.
+        //.example = .{
+        //    // When updating this field to a new URL, be sure to delete the corresponding
+        //    // `hash`, otherwise you are communicating that you expect to find the old hash at
+        //    // the new URL. If the contents of a URL change this will result in a hash mismatch
+        //    // which will prevent zig from using it.
+        //    .url = "https://example.com/foo.tar.gz",
+        //
+        //    // This is computed from the file contents of the directory of files that is
+        //    // obtained after fetching `url` and applying the inclusion rules given by
+        //    // `paths`.
+        //    //
+        //    // This field is the source of truth; packages do not come from a `url`; they
+        //    // come from a `hash`. `url` is just one of many possible mirrors for how to
+        //    // obtain a package matching this `hash`.
+        //    //
+        //    // Uses the [multihash](https://multiformats.io/multihash/) format.
+        //    .hash = "...",
+        //
+        //    // When this is provided, the package is found in a directory relative to the
+        //    // build root. In this case the package's hash is irrelevant and therefore not
+        //    // computed. This field and `url` are mutually exclusive.
+        //    .path = "foo",
+        //
+        //    // When this is set to `true`, a package is declared to be lazily
+        //    // fetched. This makes the dependency only get fetched if it is
+        //    // actually used.
+        //    .lazy = false,
+        //},
+    },
+    // Specifies the set of files and directories that are included in this package.
+    // Only files and directories listed here are included in the `hash` that
+    // is computed for this package. Only files listed here will remain on disk
+    // when using the zig package manager. As a rule of thumb, one should list
+    // files required for compilation plus any license(s).
+    // Paths are relative to the build root. Use the empty string (`""`) to refer to
+    // the build root itself.
+    // A directory listed here means that all files within, recursively, are included.
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+        // For example...
+        //"LICENSE",
+        //"README.md",
+    },
+}
diff --git a/zig/src/days/day01.zig b/zig/src/days/day01.zig
new file mode 100644
index 0000000..1c64655
--- /dev/null
+++ b/zig/src/days/day01.zig
@@ -0,0 +1,13 @@
+const std = @import("std");
+const debug = std.debug;
+const day = @import("../utils/day.zig");
+
+pub const Day = struct {
+    pub const nb = 1;
+    pub fn part1(_: []const u8) void {
+        debug.print("hello from day01 - part 1", .{});
+    }
+    pub fn part2(_: []const u8) void {
+        debug.print("hello from day01 - part 2", .{});
+    }
+};
diff --git a/zig/src/main.zig b/zig/src/main.zig
new file mode 100644
index 0000000..854189a
--- /dev/null
+++ b/zig/src/main.zig
@@ -0,0 +1,40 @@
+const std = @import("std");
+const debug = std.debug;
+const Day = @import("utils/day.zig").Day;
+const Map = std.AutoHashMap(usize, Day);
+
+const import_days = struct {
+    pub const day01 = @import("days/day01.zig");
+};
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+    const alloc = gpa.allocator();
+
+    const args = try std.process.argsAlloc(alloc);
+    defer std.process.argsFree(alloc, args);
+    if (args.len < 2) return error.InvalidArgs;
+
+    const arg_day_nb = try std.fmt.parseInt(usize, args[1], 10);
+    var days = Map.init(alloc);
+    defer days.deinit();
+
+    debug.print("Running day {d}\n", .{arg_day_nb});
+    inline for (comptime std.meta.declarations(import_days)) |decl| {
+        const day_str = decl.name[3..]; // Skip "day" prefix
+        const day_number = try std.fmt.parseInt(usize, day_str, 10);
+
+        if (day_number == arg_day_nb) {
+            const imported_day = @field(import_days, decl.name).Day;
+            const day = Day{ .nb = imported_day.nb, .part1 = imported_day.part1, .part2 = imported_day.part2 };
+
+            // TODO: get the correct input values
+            const buffer = "coucou";
+            day.part1(buffer);
+            day.part2(buffer);
+
+            break;
+        }
+    }
+}
diff --git a/zig/src/utils/day.zig b/zig/src/utils/day.zig
new file mode 100644
index 0000000..0c021fa
--- /dev/null
+++ b/zig/src/utils/day.zig
@@ -0,0 +1,8 @@
+const std = @import("std");
+
+const fn_part_run = *const fn (str_buffer: []const u8) void;
+pub const Day = struct {
+    nb: u32 = 0,
+    part1: fn_part_run,
+    part2: fn_part_run,
+};
diff --git a/zig/src/utils/input.zig b/zig/src/utils/input.zig
new file mode 100644
index 0000000..801a399
--- /dev/null
+++ b/zig/src/utils/input.zig
@@ -0,0 +1,8 @@
+const std = @import("std");
+
+pub fn read_input(day_nb: comptime_int, alloc: std.mem.Allocator) void {
+    var path = "../../inputs/day01.txt";
+    const file = try std.fs.cwd().readFile(
+        path,
+    );
+}