#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector<ll>;
using vvll = vector<vll>;
using vi = vector<int>;
using vvi = vector<vi>;
using pii = pair<int,int>;

int main() {
    string S,a;
    cin >> S;
    a = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    map<char,char> M;
    int N = S.size();
    for (int i = 0; i < 26; i++) {
        M[a[i]] = a[(i+25)%26];
    }
    for (int i = 0; i < N; i++) {
        for (int j = i; j < N; j++) {
            S[j] = M[S[j]];
        }
    }
    cout << S << endl;
}