PROGRAMMING:Number 9
How many multiples of 9 or numbers with mantissa of 9 are required to be calculated in this problem.
###Input format:
Enter a positive integer n, no more than 10 ^ 9.
###Output format:
For each group of inputs, output the number in one line.
###Input example:
Here is a set of inputs. For example:
```in
one thousand two hundred and thirty-four
```
###Output example:
The corresponding output is given here. For example:
```out
two hundred and forty-six
```
answer：If there is no answer, please comment
###Input format:
Enter a positive integer n, no more than 10 ^ 9.
###Output format:
For each group of inputs, output the number in one line.
###Input example:
Here is a set of inputs. For example:
```in
one thousand two hundred and thirty-four
```
###Output example:
The corresponding output is given here. For example:
```out
two hundred and forty-six
```
answer：If there is no answer, please comment