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

using namespace std;

string s;

int main()
{
    getline(cin,s); //输入包含有空格的字符
    char res[s.size()];
    for (int i = 0; i < s.size(); i ++ )
    {
        if(s[i] == 'z')  res[i] = 'a';
        else if(s[i] == 'Z')  res[i] == 'A';
        else if(s[i] >= 65 && s[i] <= 89 || s[i] >= 97 && s[i] <=121) res[i] = s[i] + 1;
        else res [i] = s[i];
    }

    cout << res << endl;

    return 0;
}