// Editor2
import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        if(!sc.hasNextLine()) {
            System.out.println("Invalid Input");
                return;
        }
        
        
        String str  = sc.nextLine();
        
        if(str.length() <= 0 || str.isEmpty()) {
            System.out.println("Invalid Input");
                return;
        }
        
        char[] letters = new char[26];
        String newStr = "";
        
        int c = 0;
        for(char ch = 'A'; ch <= 'Z'; ch++) {
            letters[c++] = ch; 
        } 
        
        for(char ch : str.toCharArray()) {
            if(ch == " ") {
                newStr+=" ";
                continue;
            }
            if(!Character.isLetter(ch)) {
                System.out.println("Invalid Input");
                return;
            }
            
            if(ch >= 'A' && ch <= 'Z') {
                 int l = ch - 'A';
                 newStr += letters[letters.length - l - 1];
            } else if(ch >= 'a' && ch <= 'z') {
                int l2 = ch - 'a';
                newStr += Character.toLowerCase(letters[letters.length - l2 - 1]);
            }
        }
        
        System.out.println(newStr);
    }
}