#include<stdio.h>
int strLen(char[]);
void strRev(char[]);
int main()
{
char word[100],ch;
//freopen("in.txt","r",stdin);
while(scanf("%s",word)==1)
{
scanf("%c",&ch);
strRev(word);
printf("%s%c",word,ch);
}
return 0;
}
int strLen(char str[])
{
int i;
for(i=0;str[i]!='\0';i++);
return i;
}
void strRev(char str[])
{
int i,l=strLen(str),n=l/2;
char ch;
for(i=0;i<n;i++)
{
ch=str[i];
str[i]=str[l-i-1];
str[l-i-1]=ch;
}
}
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