PROGRAMMING:Student grouping
###Input format:
###Output format:
###Input sample 1:
```in
six
5 10 2 3 14 5
```
###Output sample 1:
```out
five
```
###Input sample 2:
```in
two
1 100
```
###Output sample 2:
```out
ninety-nine
```
answer：If there is no answer, please comment
###Input format:
###Output format:
###Input sample 1:
```in
six
5 10 2 3 14 5
```
###Output sample 1:
```out
five
```
###Input sample 2:
```in
two
1 100
```
###Output sample 2:
```out
ninety-nine
```
answer：If there is no answer, please comment