#include <stdio.h>
#include <stdlib.h>
 
int myStrlen(char s[]){
int i;
for(i=0;s[i]!='\0';i++);
return i;
}
 
// 関数の中でtmpに対してmallocして
// そこに回文を代入してreturnで返しましょう
char *setPalindrome(char s[]){
char *tmp;
int len,i;
len=myStrlen(s);
tmp=(char*)malloc(sizeof(char)*(len*2+1));
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;
//以下に必要な宣言を含めて書いてください
}
 
//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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