#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);
    tmp = (char *)malloc((2 * len + 1) * sizeof(char)); // 回文の長さは元の文字列の2倍になるため、+1はヌル終端文字の分
    if (tmp == NULL) {
        printf("Memory allocation failed\n");
        exit(1);
    }
 
    int i, j;
 
    for (i = 0, j = len - 1; j >= 0; i++, j--) {
        tmp[i] = s[j];
    }
 
    for (j = 0; j < len; i++, j++) {
        tmp[i] = s[j];
    }
 
    tmp[i] = '\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;
}
 

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