using System;

using System.Collections.Generic;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        for(var i = 15; i < 16; i++){

​

        // 11006881013

        var nsu = "001688";

        var monthDay = "1110"; // MMddyy

        var companyCode = "0026";

        var branchCode = "5877";

​

        var administrativeCode1 = new StringBuilder();

        administrativeCode1.Append(monthDay.Substring(0, 2)); //05

        administrativeCode1.Append(monthDay.Substring(3, 1)); //2

​

        administrativeCode1.Append(nsu.Substring(1, 1));

        administrativeCode1.Append(nsu.Substring(3, 1));

        administrativeCode1.Append(nsu.Substring(5, 1));

​

        administrativeCode1.Append(nsu.Substring(4, 1));

        administrativeCode1.Append(nsu.Substring(2, 1));

        administrativeCode1.Append(nsu.Substring(0, 1));

​

        administrativeCode1.Append(monthDay.Substring(2, 1)); //0

        var administrativeCode = administrativeCode1.ToString();

        administrativeCode = string.Format("{0}{1}{2}", administrativeCode,companyCode, branchCode); // a ordem do company e o branch code não influencia no algoritmo

​

        var sum = 0;

        var multiplier = 2;

        var iterator = administrativeCode.Length - 1;

​

        while (iterator >= 0)

        {

            var resultMultiplication = Convert.ToInt32(administrativeCode.Substring(iterator, 1)) * multiplier;

            var rest = resultMultiplication % 10;

            sum += Convert.ToInt32((resultMultiplication / 10) + rest);

            if (multiplier == 2) { multiplier = 1; }

            else { multiplier = 2; }

            iterator--;

        }

​

        var digit = sum % 10;

        digit = 10 - digit;

​

        var x = (digit % 10).ToString();

        Console.WriteLine(administrativeCode1 + x + i);

      }

    }

}