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

int main() {
	cin.tie(0), ios::sync_with_stdio(false);
	string s; cin>>s;
	const int diff='Z'-'A'+1;
	for(int i=0;i<s.size();i+=diff){
		for(int j=i;j<s.size()&&j<i+diff;++j){
			s.at(j)=(s.at(j)-j-1-'A'+i+diff)%diff+'A';
		}
	}
	cout<<s<<"\n"s;
}