Problem2037--Letters Cyclic Shift

2037: Letters Cyclic Shift

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Time Limit : 2.000 sec  Memory Limit : 256 MiB

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Description

time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output

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' 'y' 'x' 'b' 'a' '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|≤100000) 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.

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