#include <stdio.h>
#include <cstring>
void reverse_string(char *str) {
// Your logic here
int start=0;
int end=strlen(str)-1;
while(start<end){
int temp =str[start];
str[start] =str[end];
str[end] =temp;
start++;
end--;
}
}
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;
}