Again?

Description:

Input:

The only line of the input contains a 7-digit hexadecimal number. The first "digit" of the number is letter A, the rest of the "digits" are decimal digits 0-9.

Output:

Output a single integer.

Sample Input:

A278832

Sample Output:

0

Sample Input:

A089956

Sample Output:

0

Sample Input:

A089957

Sample Output:

1

Sample Input:

A144045

Sample Output:

1