#include <stdio.h>
void reverse_string(char *str) {
// Your logic here
int count = 0;
while(str[count] != '\0')
count++;
int mid = count / 2;
for (int i = 0; i < mid; i++)
{
char temp = str[i];
str[i] = str[count-1-i];
str[count-1-i] = temp;
}
}
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;
}