import java.util.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner in = new Scanner(System.in);
		String str = in.nextLine();
		char[] s = str.toCharArray();
		int ABC_SIZE = 26; 
		int k = in.nextInt();
		String str1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		char[] s1 = str1.toCharArray();
		for(int i = 0; i < s.length; i++){
			int find = s[i] - 'A';
			if(find - k < 0) s[i] = s1[ABC_SIZE - (k - find)];
			else s[i] = s1[find-k];

		}
	System.out.println(s);
	}
}