EZ

#include<bits/stdc++.h>
using namespace std;
int main(){
	string s;
	getline(cin,s);
	char arr[114514]={'Z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y'};
	int x=1;
	for(int i=0;i<s.size();i++){
		if(s[i]==' '){
			cout<<arr[x%26];
			x++;
		}else cout<<s[i];
	}
	return 0;
}