#include<bits/stdc++.h>
using namespace std;

int main(){
    string s;
    while(cin >> s){
        int len  = s.size();
        for(int i = 0 ;i < len ;i++){
            if(s[i] >= 'a' && s[i] <= 'z'){
                s[i] = 'a' +(s[i] - 'a' +1)%26;
            }else if(s[i] >= 'A' && s[i] <= 'Z'){
                s[i] = 'A' +(s[i] - 'A' +1)%26;
            }
        }
        cout << s << endl;
    }


    return 0;
}