AAAAACCCCC!!!!!

#include <iostream>
#include <string>
using namespace std;
int main(){
    string s;
    getline(cin, s);
    int len = s.size();
    for(int i = 0; i < len; i++){
        if(s[i] >= 'a' && s[i] < 'z'){
            s[i]++;
        }else if(s[i] == 'z'){
            s[i] = 'a';
        }
    }
    cout << s;
    return 0;
}