#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[]) {
    int len = myStrlen(s);
    int i, total_len;
    char *tmp;

    total_len = 2 * len;
    tmp = (char *)malloc((total_len + 1) * sizeof(char));
    if (tmp == NULL) {
        printf("ERROR\n");
        exit(1);
    }

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

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

    tmp[total_len] = '\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;
}