#include <stdio.h>
#include <stdlib.h>
 
int micro(char m[]){
int n;
for(n=0;m[n]!='\0';n++);
return n;
}
 
char *center(char m[],char *p){
char *tmp;
int n,i=0;
n=micro(m);
tmp=p;
for(i=0;i<n;i++){
*tmp=m[i];
tmp++;
}
for(i=(n-2);i>=0;i--){
*tmp=m[i];
tmp++;
}
*tmp='\0';
return p;
}
 
int main(){
int i,n;
char a[1024];
char *kaibun;
scanf("%s",a);
n=micro(a);
kaibun=(char *)malloc(sizeof(char)*(n+n+2));
kaibun = center(a,kaibun);
printf("%s\n ->%s\n",a,kaibun);
free(kaibun);
return 0;
}

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