#include <stdio.h>
#include <string.h>
char * fun(char *s)
{
int len = strlen(s);
int i, n = len / 2;
char tem;
for (i = 0; i <= n; i++)
{
tem = s[i];
s[i] = s[len - 1 - i];
s[len - 1 - i] = tem;
}
return s;
}
int main(){
char s[80];
gets(s);
puts(fun(s));
}
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