#include<iostream>
using namespace std;
char a[]{'b','c','d','e','f','g','h','i','j','k','l','m','n',
'o','p','q','r','s','t','u','v','w','x','y','z','a'};
int main(){
string s="azx";
cin>>s;
for(int i=0;i<s.size();i++){
s[i]=a[s[i]-97];
}
cout<<s;
return 0;
}
