#include <iostream>
#include <cstring>
using namespace std;
int main()
{
    string s;
    getline (cin, s);
    for (int i = 0; i < s.size(); i ++ ) 
    {
        if ((s[i] >= 'A' and s[i] < 'Z') or (s[i] >= 'a' and s[i] < 'z'))
            s[i] = (char)(s[i] + 1);
        else if (s[i] == 'Z') s[i] = 'A';
        else if (s[i] == 'z') s[i] = 'a';
    }
    cout << s;
}