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