#include <iostream>

using namespace std;

int main()
{
    string s;

    getline(cin, s);

    for (char &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;
}