#include <stdio.h>
void reverse_string(char *str) {
// Your logic here
char *s=str;
char *e=str;
int i=0;
while(str[i] != '\0')
{
e++;
i++;
}
e--;
while(s < e)
{
char temp = *s;
*s = *e;
*e = temp;
s++,e--;
}
}
int main() {
char str[101];
fgets(str, sizeof(str), stdin);
// Remove newline
int i = 0;
while (str[i] != '\0') {
if (str[i] == '\n') {
str[i] = '\0';
break;
}
i++;
}
reverse_string(str);
printf("%s", str);
return 0;
}