Problems
Four digit numbers
Four digit numbers
How many four digit numbers are there with sum of digits equals to $n$?
\InputFile
One integer $n~(0 \le n \le 36)$.
\OutputFile
Print the number of four digit numbers with sum of digits equals to $n$.
\Examples
There are $4$ four digit numbers with sum of digits equals to $2$: $1001, 1010, 1100, 2000$.
Input example #1
2
Output example #1
4