#include <stdio.h>
#include <stdlib.h>
 
int myStrlen(char s[])
{int i;
for(i=0; s[i]!='\0'; i++);
return i;}
 
// 動的メモリを確保して回文を返す
char *setPalindrome(char s[])
{int len=myStrlen(s);
int i;
 
char *tmp=malloc((len*2+1)*sizeof(char));
for(i=0; i<len;i++){
tmp[i]=s[i];}
for(i=0;i<len;i++)
{tmp[len+i]=s[len-1-i];}
 
tmp[len*2] ='\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;
}

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