# Advent of Code 2025

## Usage

```bash
cargo build --release

# run a specific day
./target/release/aoc25 3
# 17452 173300819005913

# run specific part
./target/release/aoc25 3 --part 1

# run all days
./target/release/aoc25 --all

# use test input
./target/release/aoc25 3 --test
```

## Benchmarking

```bash
hyperfine './target/release/aoc25 3'
hyperfine './target/release/aoc25 --all'
```

## Project Structure

```
src/
├── main.rs           # CLI runner
├── solutions/
│   ├── mod.rs        # exports
│   ├── day.rs        # Day trait + helpers
│   └── day*.rs       # solutions
inputs/
├── 1.txt, 2.txt ...  # puzzle inputs
└── 1.test ...        # test inputs
```