Problem:
Sum of 4 Integers

Write a program which reads an integer n and identifies the number of combinations of a, b, c and d (0 ≤ a, b, c, d ≤ 9) which meet the following equality:

a + b + c + d = n

For example, for n = 35, we have 4 different combinations of (a, b, c, d): (8, 9, 9, 9), (9, 8, 9, 9), (9, 9, 8, 9), and (9, 9, 9, 8).

Input

The input consists of several datasets. Each dataset consists of n (1 ≤ n ≤ 50) in a line. The number of datasets is less than or equal to 50.

Output

Print the number of combination in a line.

Sample Input

35
1

Output for the Sample Input

4
4

Solution in C# (judge verdict: Accepted)

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

namespace contest8
{
    class Program
    {
        static void Main(string[] args)
        {
            while (true)
            {
                //文字列読み込み
                var line_origin = Console.ReadLine();

                //空なら終わり
                if (string.IsNullOrEmpty(line_origin))
                {
                    break;
                }
                int ans = int.Parse(line_origin);

                int count = 0;
/*
 *              var choice = from a in Enumerable.Range(0, 10)
                             from b in Enumerable.Range(0, 10)
                             from c in Enumerable.Range(0, 10)
                             from d in Enumerable.Range(0, 10)
                             where a + b + c + d == ans
                             select Tuple.Create(a,b,c,d);

                foreach (Tuple<int,int,int,int> i in choice)
                {
                    count++;
                }
*/
                for (int a = 0; a < 10; a++)
                {
                    for (int b = 0; b < 10; b++)
                    {
                        for (int c = 0; c < 10; c++)
                        {
                            for (int d = 0; d < 10; d++)
                            {
                                if (a + b + c + d == ans)
                                {
                                    count++;
                                }
                            }
                        }
                    }
                }

                Console.WriteLine(count.ToString());
            }
        }
    }
}