#include <stdio.h>
#include <string.h>

int main(void){
    int i, j, len, dis;
    char temp, s[1024];
    char alpha[26] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    scanf("%s", s);
    len = strlen(s);
    for(i=0;i<len;i++){
        for(j=0;j<26;j++){
            if(s[i]==alpha[j]){
                dis = j-i-1;
                while(dis<0){
                    dis += 26;
                }
                s[i] = alpha[dis];
                break;
            }
        }
    }
    printf("%s\n", s);
    return 0;
}