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 Python (judge verdict: Accepted)

import sys
table={}
def dfs(a,b):
    global table
    if not (a,b) in table:
        if a==0:return 1
        elif b==0 or a < 0:return 0
        table[(a,b)]=sum([dfs(a-i,b-1) for i in xrange(10)])
    return table[(a,b)]
for i in sys.stdin.readlines():
    print dfs(int(i.strip()),4)