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