#include <iostream>
using namespace std;
int main(){
string s;
getline(cin,s);
for(int i=0;i<s.size();i++){
if(s[i]>='a' && s[i]<='z'){
s[i] = 'a' + (s[i]-'a' +1) % 26;
}
if(s[i]>='A' && s[i]<='Z'){
s[i] = 'A' + (s[i]-'A' +1) % 26;
}
}
cout << s << endl;
return 0;
}