🎄 Advent of Code C# Template

A C# template for solving Advent of Code puzzles with benchmarking support.

How to Use

1. Create a Solution Class

Create a new class that inherits from AdventDayBase and add the [Day] attribute. Naming doesn't matter.

[Day(2025, 1)]
public class Day1_2025 : AdventDayBase
{
    public Day1_2025(string input) : base(input) { }

    public override void SolvePart1()
    {
        // Use Input for string-based processing
        var lines = Input.Split('\n');
        int result = lines.Length;
        PrintResult(result);
    }

    public override void SolvePart2()
    {
        // Use InputSpan for span processing
        int count = 0;
        foreach (var line in InputSpan.EnumerateLines())
        {
            count++;
        }
        PrintResult(count);
    }
}

2. Add Your Input File

Place your puzzle input in the appropriate folder:

2025/Inputs/Day1.txt

3. Run Your Solution

Run the program and answer the prompts:

Do you want to benchmark? (y/n):
n
Enter the year:
2025
Enter the day:
1
Enter the part (1 or 2):
1

4. Benchmark Your Solution

To measure performance:

Do you want to benchmark? (y/n):
y
Enter the year:
2025
Enter the day:
1
Enter the part (1 or 2):
1