namespace aoc2024.Util;

public static class NumConcat
{
    public static long Longs(long a, long b)
    {
        return b switch
        {
            < 10 => 10L * a + b,
            < 100 => 100L * a + b,
            < 1000 => 1000L * a + b,
            < 10000 => 10000L * a + b,
            < 100000 => 100000L * a + b,
            < 1000000 => 1000000L * a + b,
            < 10000000 => 10000000L * a + b,
            < 100000000 => 100000000L * a + b,
            < 1000000000 => 1000000000L * a + b,
            < 10000000000 => 10000000000L * a + b,
            < 100000000000 => 100000000000L * a + b,
            < 1000000000000 => 1000000000000L * a + b,
            < 10000000000000 => 10000000000000L * a + b,
            < 100000000000000 => 100000000000000L * a + b,
            < 1000000000000000 => 1000000000000000L * a + b,
            < 10000000000000000 => 10000000000000000L * a + b,
            < 100000000000000000 => 100000000000000000L * a + b,
            _ => 1000000000000000000L * a + b
        };
    }
}