tj

#include <iostream>
#include <string>

using namespace std;

string str;
long long cnt = 0;

int main() {
    getline(cin , str);
    for(int i = 0 ; i < str . length() ; i++) {
        if(str[i] >= 'a' && str[i] <= 'y') {
			str[i] += 1;
        }else if(str[i] == 'z') {
        	str[i] -= 25;  
        }
        cnt++;
    }

    cout << str << endl;
    return 0;
}