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+<h1 align="center">
+    <a href="https://adventofcode.com/2023">
+        Advent of Code 2023
+    </a>
+</h1>
+
+<h4 align="center"> ...solved in C++17.</h4>
+
+<p align="center">
+    <a href="https://adventofcode.com/2023">
+        <img src="https://img.shields.io/badge/aoc%202023-0f0f23?style=for-the-badge" alt="AoC 2023">
+    </a>
+    <img src="https://img.shields.io/badge/lang-c++-00599c?style=for-the-badge&logo=cplusplus&logoColor=white">
+    <img src="https://img.shields.io/badge/nix-fakes-5277c3?logo=nixos&logoColor=white&style=for-the-badge">
+</p>
+
+Run `nix develop` for a reproducible environment.