#include <stdio.h>
void reverse_string(char *str) {
// Your logic here
char temp;
char * end = str;
while(*end !='\0')
{
end++;
}
--end;
while(str<end)
{
temp = *end;
*end = *str;
*str = temp;
str++;
end--;
}
}
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;
}