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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            object[] numbers =
                { 0b1, 0b10, new object[] { 0b100, 0b1000 },   // binary literals
             0b1_0000, 0b10_0000 };                        // digit separators
            var (sum, count) = Tally(numbers);                 // deconstruction
            Console.WriteLine($"Sum: {sum}, Count: {count}");
        }
        static (int sum, int count) Tally(object[] values)     // tuple types
        {
            var r = (s: 0, c: 0);                              // tuple literals
            void Add(int s, int c) { r = (r.s + s, r.c + c); } // local functions
            foreach (var v in values)
            {
                switch (v)                                     // switch on any value
                {
                    case int i:                                // type patterns
                        Add(i, 1);
                        break;
                    case object[] a when a.Length > 0:         // case conditions
                        var t = Tally(a);
                        Add(t.sum, t.count);
                        break;
                }
            }
            return r;
        }
    }
}