PROGRAMMING:Determine palindrome string

Enter a string to determine whether the string is palindrome. Palindrome is string centrosymmetry, reading from left to right and reading from right to left are the same.
###Input format:
Enter a non empty string that does not exceed 80 characters in length and ends with carriage return in one line.
###Output format:
Output output string in line 1. If it is a palindrome string, output 'yes' in line 2, otherwise output' no '.
###Input sample 1:
```in
level
```
###Output sample 1:
```out
level
Yes
```
###Input sample 2:
```in
1 + 2 = 2 + 1 =
```
###Output sample 2:
```out
1 + 2 = 2 + 1 =
No
```







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