#include <stdio.h>
#include <string.h>
void reversethree1(char x[])
{
    char s[27] = { "0" };
    s[1] = 'a';
    for (int i = 2; i <= 26; i++) {
        s[i] = s[i - 1] + 1;
    }
        for (int j = 1; j <= 26; j++) {
            if (*x == s[j] && j + 3 > 26) {
                *x = s[j + 3 - 26];
                break;
            }
            else if (*x== s[j] && j + 3 <= 26) {
                *x= s[j + 3];
                break;
            }
        }
}
void reversethree2(char x[])
{
    char s1[27] = { "0" };
    s1[1] = 'A';
    for (int i = 2; i <= 26; i++) {
        s1[i] = s1[i - 1] + 1;
    }
        for (int j = 1; j <= 26; j++) {
            if (*x == s1[j] && j + 3 > 26) {
                *x = s1[j + 3 - 26];
                break;
            }
            else if (*x == s1[j] && j + 3 <= 26) {
                *x = s1[j + 3];
                break;
            }
        }
}
void swap(char x[],char y[])
{
    char s='0';
    s = *x;
    *x = *y;
    *y = s;
}
void exchange(char x[])
{
    if (*x>'Z') {
        *x -= 32;
    }
    else {
        *x += 32;
    }
}
int main()
{
    int i;
    char s[50] = { "0" };
    scanf("%s", s);
    for (i = 0; i < strlen(s); i++) {
        if (s[i] > 'Z') {
            reversethree1(&s[i]);
        }
        else {
            reversethree2(&s[i]);
        }
    }
    for(i=0;i<strlen(s)/2;i++){
        swap(&s[i],&s[strlen(s)-1-i]);
    }
    for (i = 0; i < strlen(s); i++) {
        exchange(&s[i]);
    }
    printf("%s\n", s);
    return 0;
}

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        final Scanner scanner = new Scanner(System.in);
        final String crypto = scanner.nextLine();
        final StringBuilder result = new StringBuilder();
        for (int i = crypto.length() - 1; i >= 0; i--) {
            int index = crypto.charAt(i);

            //rightMove
            index += 3;
            if ((index > 90 && index < 97) || index > 122) {
                index -= 26;
            }

            //upperLowerConvert
            if (index < 97) {
                index += 32;
            } else {
                index -= 32;
            }

            result.append((char) index);
        }
        System.out.println(result);
    }
}