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