#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 i=myStrlen(s);
 
	tmp=malloc(2*i+1);
 
	for(int j=0;j<i;j++){
		tmp[j]=tmp[i*2-j-1]=s[j];
	}
	tmp[2*i]='\0';
 
	return tmp;
}
 
 
//メイン関数はいじる必要はありません
int main(){
    int i;
    char nyuryoku[1024]; //入力
    char *kaibun;   //回文を受け取る
    scanf("%s",nyuryoku);
    kaibun = setPalindrome(nyuryoku);
    printf("%s\n  -> %s\n",nyuryoku,kaibun);
    free(kaibun);
    return 0;
}
 

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