#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <iomanip>
using namespace std;

int main()
{
	string alpha = "ZYXWVUTSRQPONMLKJIHGFEDCBA";
	for (int i = 0; i < 6; i++)
	{
		alpha += alpha;
	}
	string s, ans = "";
	cin >> s;
	for (int i = 0; i < static_cast<int>(s.size()); i++)
	{
		int p;
		for (int j = 0; j < 26; j++)
		{
			if (s[i] == alpha[j])
			{
				p = j;
				break;
			}
		}
		ans += alpha[p + i + 1];
	}
	cout << ans << endl;
	return 0;
}