public static void main(String[] args) {

Scanner cin = new Scanner(System.in);

while (cin.hasNext()) {

String intStr = cin.nextLine();
char[] intChar = intStr.toCharArray();
StringBuilder output = new StringBuilder();

for (int i = intChar.length - 1; i >= 0; i--) {

output.append(intChar[i]);

}
System.out.println(new BigDecimal(output.toString()));

}
cin.close();

}