PROGRAMMING:Find out the highest score of a group of students
This problem requires the preparation of procedures to find the highest score.
###Input format:
Input gives a series of nonnegative integers on a line, separated by spaces. When a negative integer is read, it means the end of the input, and the number should not be processed.
###Output format:
Output the highest score on one line.
###Input example:
Here is a set of inputs. For example:
```in
67 88 73 54 0 95 60 -1
```
###Output example:
The corresponding output is given here. For example:
```out
ninety-five
```
answer：If there is no answer, please comment
###Input format:
Input gives a series of nonnegative integers on a line, separated by spaces. When a negative integer is read, it means the end of the input, and the number should not be processed.
###Output format:
Output the highest score on one line.
###Input example:
Here is a set of inputs. For example:
```in
67 88 73 54 0 95 60 -1
```
###Output example:
The corresponding output is given here. For example:
```out
ninety-five
```
answer：If there is no answer, please comment