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 Ruby (judge verdict: Accepted)



while n = gets do
  break if n == nil
  n = n.to_i
  sum = 0

  (0..9).each do |a|
    (0..9).each do |b|
      (0..9).each do |c|
        (0..9).each do |d|
          if  a + b + c + d == n then
            sum +=1
          end
        end
      end
    end
  end
  puts sum
end