#include<iostream>
using namespace std;
int main(){
    string s;
    getline(cin,s);

    for (auto &c:s){
        if(c>='a'&&c<='z'){
            c=(c-'a'+1)%26+'a';
        }
        else if(c>='A'&&c<='Z'){
            c=(c-'A'+1)%26+'A';
        }
    }
    cout<<s<<endl;



    return 0;
}