package no018; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); char[] s = sc.next().toCharArray(); int n = s.length; for(int i=0;i<n;i++) { s[i] = (char) ((((s[i] - 'A') + 26 * 100 - (i+1))%26) + 'A'); } System.out.println(String.valueOf(s)); } }