The word is given. Check if it is a "changeling", (that is, it is read the same way both from the beginning and from the end).
Solve the problem
without using the built-in string functions, except for a function that returns the length of a string.
Input: The first line is a word.
Output: need to output the word "
YES" if the word is a shifter, and the word "
NO" - otherwise
Sample input and output
| Test number |
Input |
Output |
| 1 |
foresete |
NO |
| 2 |
halah |
YES |
Запрещенные операторы:::-1;reverse