#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);
    char *tmp = (char *)malloc(len + 1);
 
    if (tmp == NULL) {
        printf("メモリの確保に失敗しました\n");
        exit(1);
    }
 
    for (int i = 0; i < len; i++) {
        tmp[i] = s[len - 1 - i];
    }
    tmp[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;
}
 

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