#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>

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')
        {
            if(s[i] == 'z')
            {
                s[i] = 'a';
            }
            else
            {
                s[i] = s[i] + 1;
            }
        }
        if (s[i] >= 'A' && s[i] <= 'Z')
        {
            if(s[i] == 'Z')
            {
                s[i] = 'A';
            }
            else
            {
                s[i] = s[i] + 1;
            }
        }

    }

    cout << s << endl;

    return 0;
}