#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 newLen = len * 2;
    char *tmp = (char *)malloc((newLen + 1) * sizeof(char)); 

    if (tmp == NULL) { 
        return NULL;
    }

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

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

    tmp[newLen] = '\0'; 
    return tmp;
}

int main() {
    char nyuryoku[1024]; 
    char *kaibun;       
    scanf("%s", nyuryoku);
    kaibun = setPalindrome(nyuryoku);

    printf("%s\n  -> %s\n", nyuryoku, kaibun);
    free(kaibun);
    return 0;
}