static void CheckBounds(object input)
{
    switch (input)
    {
        case int x when x > 1000:
        case long y when y > 10000L:
            Console.WriteLine("Value is too large");
            break;
        case int x when x < -1000:
        case long y when y < -10000L:
            Console.WriteLine("Value is too low");
            break;
        default:
            Console.WriteLine("Value is in range");
            break;
    }
}