708_A. Letters Cyclic Shift
You are given a non-empty string s consisting of lowercase English letters. You have to pick exactly one non-empty substring of s and shift all its letters 'z' <image> 'y' <image> 'x' <image> 'b' <image> 'a' <image> 'z'. In other words, each character is replaced with the previous character of English alphabet and 'a' is replaced with 'z'.

What is the lexicographically minimum string that can be obtained from s by performing this shift exactly once?

Input

The only line of the input contains the string s (1 ≤ |s| ≤ 100 000) consisting of lowercase English letters.

Output

Print the lexicographically minimum string that can be obtained from s by shifting letters of exactly one non-empty substring.

Examples

Input

codeforces


Output

bncdenqbdr


Input

abacaba


Output

aaacaba

Note

String s is lexicographically smaller than some other string t of the same length if there exists some 1 ≤ i ≤ |s|, such that s1 = t1, s2 = t2, ..., si - 1 = ti - 1, and si < ti.
```python
import sys
n=input()
i=0
n=n+'a'
m=""
while n[i]=='a' and len(n)>i+1:
    i+=1
    m=m+'a'
if i+1==len(n):
    w=m[0:len(m)-1]+'z'
    print(w)
    sys.exit()
while n[i]!='a' and len(n)>i:
    m=m+chr(ord(n[i])-1)
    i+=1
m=m+n[i:len(n)-1]

print(m)

```