#include <stdio.h>
#include <stdlib.h>

int myStrlen(char s[]){
    int i;
    for(i=0;s[i]!='\0';i++);
    return i;
}

char *setPalindrome(char s[]){
    char *tmp;
    int len = myStrlen(s);
    int i;

    tmp = (char *)malloc(sizeof(char) * (len * 2 + 1));
    
    if (tmp == NULL) {
        return NULL;
    }

    for (i = 0; i < len; i++) {
        tmp[i] = s[i];
    }

    for (i = 0; i < len; i++) {
        tmp[len + i] = s[len - 1 - i];
    }

    tmp[len * 2] = '\0';

    return tmp;
}

int main(){
    int i;
    char nyuryoku[1024];
    char *kaibun;
    scanf("%s",nyuryoku);
    kaibun = setPalindrome(nyuryoku);
    printf("%s\n  -> %s\n",nyuryoku,kaibun);
    free(kaibun);
    return 0;
}