#include <stdio.h>
#include <string.h>
int main() {
char str[100];
int i = 0;
char ch;
while ((ch = getchar()) != '\n' && i < 99) {
str[i++] = ch;
}
str[i]='\0';
int length = strlen(str);
int start = 0;
int end = length - 1;
while (start < end) {
char temp = str[start];
str[start] = str[end];
str[end] = temp;
start++;
end--;
}
printf("%s", str);
return 0;
}