CodeForces 709C Letters Cyclic Shift

C. Letters Cyclic Shift

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| ≤ 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

#include <iostream>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#include <string>

using namespace std;
const int maxn=1e5;
char a[maxn+5];
char fun(char x)
{
    char b=x;
    if(x=='a')
        b='z';
    else
        b--;
    return b;
}
int main()
{
    scanf("%s",a);
    int len=strlen(a);
    int l=len-1,r=len-1;
    for(int i=0;i<len;i++)
    {
        if(l==len-1&&a[i]!='a')
            l=i;
        if(l!=len-1&&r==len-1&&a[i]=='a')
            r=i-1;
    }
    for(int i=0;i<len;i++)
    {
        if(i<=r&&i>=l)
            printf("%c",fun(a[i]));
        else
            printf("%c",a[i]);

    }
    printf("\n");
    return 0;
}