这个怎么简单化 用什么方法呢

namespace ConsoleApplication2
{
    public class bureau
    {
        public string frist { get; set; }        public string second { get; set; }        public int Sum { get; set; }
    }    public class ten : bureau
    {
        public string third { get; set; }
    }
}using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;namespace ConsoleApplication2
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var bureau = new bureau[9];
            var a = new bureau();
            var ten = new ten();
            string second;
            string frist;
            for (int i = 0; i < 9; i++)
            {
                a = new bureau();                for (int k = 1; k > 0; k++)
                {
                    Console.WriteLine("第" + (i + 1) + "轮第1次投掷成绩:");
                    frist = string.Empty;
                    frist = Console.ReadLine();
                    a.frist = frist;
                    Console.WriteLine("第" + (i + 1) + "轮第2次投掷成绩:");
                    second = string.Empty;
                    second = Console.ReadLine();
                    a.second = second;
                    try
                    {
                        if (int.Parse(frist) > 10)
                        {
                            Console.WriteLine("输入数字不能大于10");
                        }
                        if (int.Parse(second) > 10)
                        {
                            Console.WriteLine("输入数字不能大于10");
                        }
                        if (int.Parse(frist) == 10 && int.Parse(second) <= 10)
                        {
                            a.Sum = int.Parse(a.frist) + int.Parse(a.second);
                            break;
                        }
                        if (int.Parse(frist) != 10 && 10 - int.Parse(frist) >= int.Parse(second))
                        {
                            a.Sum = int.Parse(a.frist) + int.Parse(a.second);
                            break;
                        }
                        Console.WriteLine("输入有误");                    }                    catch (Exception)
                    {                        Console.WriteLine("只能输入数字");
                    }                    frist = string.Empty;
                    second = string.Empty;
                }                bureau[i] = a;
                if (i > 0 && int.Parse(bureau[i - 1].frist) == 10 ||
                    i > 0 && int.Parse(bureau[i - 1].frist) + int.Parse(bureau[i - 1].second) == 10)
                {                    bureau[i - 1].Sum += int.Parse(bureau[i].frist);
                    Console.WriteLine("第" + (i) + "轮成绩：" + bureau[i - 1].Sum);
                }                Console.WriteLine("第" + (i + 1) + "轮成绩：" + bureau[i].Sum);
            }
            //第十局
            var b = new ten();
            string third;
            for (int i = 1; i > 0; i++)
            {                Console.WriteLine("第10轮第1次投掷成绩:");
                frist = Console.ReadLine();
                b.frist = frist;
                Console.WriteLine("第10轮第2次投掷成绩:");
                second = Console.ReadLine();
                b.second = second;
                Console.WriteLine("第10轮第3次投掷成绩");
                third = Console.ReadLine();
                b.third = third;
                try
                {
                    if (int.Parse(frist) > 10)
                    {
                        Console.WriteLine("输入数字不能大于10");
                    }
                    if (int.Parse(second) > 10)
                    {
                        Console.WriteLine("输入数字不能大于10");
                    }
                    if (int.Parse(frist) == 10 && int.Parse(second) <= 10)
                    {
                        ten.Sum = int.Parse(b.frist) + int.Parse(ten.second) + int.Parse(b.third);
                        break;
                    }
                    if (int.Parse(frist) != 10 && 10 - int.Parse(frist) > int.Parse(second))
                    {
                        ten.Sum = int.Parse(b.frist) + int.Parse(b.second);
                        break;
                    }
                    if (int.Parse(frist) != 10 && 10 - int.Parse(frist) == int.Parse(second))
                    {
                        ten.Sum = int.Parse(b.frist) + int.Parse(b.second) + int.Parse(b.third);
                        break;
                    }                    Console.WriteLine("输入有误");                }
                catch (Exception e)
                {                    Console.WriteLine("只能输入数字");
                }
                        frist = string.Empty;
                        second = string.Empty;
                        third = string.Empty;                    }
                
                Console.WriteLine("第10轮成绩：" + ten.Sum);
            }
        }
    }