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