#include<bits/stdc++.h> using namespace std; int main() { char a,b,c,d; cin >> a>>b>>c>>d; char s = ((a - 65) + 2) % 26 + 65; char s1 = ((b - 65) + 2) % 26 + 65; char s2 = ((c - 65) + 2) % 26 + 65; char s3 = ((d - 65) + 2) % 26 + 65; cout << s; return 0; }