#include <bits/stdc++.h>
using namespace std;

int main()
{
	string s;
	cin >> s;
	int cnt = 2625;
	for(int i = 0; i < (int)s.size(); i++)
	{
		cout << (char)('A' + (s[i] - 'A' + cnt) % 26);
		cnt--;
	}
	cout << endl;
	return 0;
}