using System;
using System.Collections.Generic;
using System.Linq;

namespace CSharpProject {
    /// <summary>
    /// 単なる数値で表された金額を硬貨、札で表現しなおすクラス。
    /// </summary>
    public class Mony {
        //内部用の機械的アクセス用。
        private int[] datas = new int[9];

        public int One { get { return datas[0]; } private set { datas[0] = value; } }
        public int Five { get { return datas[1]; } private set { datas[1] = value; } }
        //10
        public int Ten { get { return datas[2]; } private set { datas[2] = value; } }
        public int Fifty { get { return datas[3]; } private set { datas[3] = value; } }
        public int Hundred { get { return datas[4]; } private set { datas[4] = value; } }
        public int FiveHundred { get { return datas[5]; } private set { datas[5] = value; } }
        //1,000
        public int Thousand { get { return datas[6]; } private set { datas[6] = value; } }
        public int FiveThousand { get { return datas[7]; } private set { datas[7] = value; } }
        //10,000
        public int TehThousand { get { return datas[8]; } private set { datas[8] = value; } }

        private int intValue;

        /// <summary>
        /// このクラスを初期化します。
        /// </summary>
        /// <param name="value">金額</param>
        public Mony(int value) {
            ParseInt(value);
        }

        /// <summary>
        /// intをパースしてMonyクラスにセットする
        /// </summary>
        /// <param name="num"></param>
        private void ParseInt(int num) {
            //Array.Clear(datas, 0, datas.Length);
            intValue = num;

            for (int i = 1; i <= Math.Min(4, (int)Math.Log10(num) + 1); i++) {
                var value = GetDigitValue(num, i);
                if (value >= 5) {
                    datas[(i - 1) * 2] = value - 5;
                    datas[(i - 1) * 2 + 1]++;
                } else {
                    datas[(i - 1) * 2] = value;
                }
            }

            TehThousand = num / 10000;
        }

        /// <summary>
        /// intの任意の桁の値を取得します。
        /// </summary>
        /// <param name="digit">下から数えた取得したい桁数</param>
        /// <param name="num">取得する元の数値</param>
        private int GetDigitValue(int num, int digit) {
            int numDighit = (int)Math.Log10(num) + 1;
            if (numDighit < digit || digit < 0)
                throw new ArgumentException("digit");
            for (int i = numDighit; i > digit; i--) {
                //消去したい桁数
                int deleateDigiht = (int)Math.Pow(10, (int)Math.Log10(num));
                //ex:4321→4→4000
                num -= num / deleateDigiht * deleateDigiht;
            }
            if (digit == 1)
                return num;
            return num / (int)Math.Pow(10, digit - 1);
        }

        /// <summary>
        /// この構造体をintに変換します。
        /// </summary>
        /// <returns></returns>
        public int ToInt32() {
            return intValue;
        }

    }

    class Program {
        public static void Main() {
            //お釣り
            var m = new Mony(1234986);
            var s = string.Format("10,000yen>{0},5,000yen>{1},1,000yen>{2},500yen>{3},100yen{4},50yen>{5},10yen>{6},5yen>{7},1yen>{8}",
                m.TehThousand, m.FiveThousand, m.Thousand, m.FiveHundred, m.Hundred, m.Fifty,m.Ten, m.Five, m.One);
            Console.WriteLine(s);
        }
    }
}