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;
namespace ConsoleApplication1{
    class Program{
        static void Main(string[] args){
            while (true) {
                String str = Console.ReadLine();
                if (str == null) {
                    break;
                }
                int n = int.Parse(str);
                int count = 0;
                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 == n) {
                                    count++;
                                }
                            }
                        }
                    }
                }
                Console.WriteLine(count);
            }
        }
    }
}