Problem: 

Input

The input contains a single integer a (0 ≤ a ≤ 35).

Output

Output a single integer.

Examples

Input

3


Output

8


Input

10


Output

1024

Solution (in PYTHON):

Solution:
n = ["Washington","Adams","Jefferson","Madison", "Monroe", "Adams", 
    "Jackson", "Van Buren", "Harrison", "Tyler", "Polk", "Taylor",
    "Fillmore", "Pierce", "Buchanan", "Lincoln", "Johnson", "Grant",
    "Hayes", "Garfield", "Arthur", "Cleveland", "Harrison", "Cleveland",
    "McKinley", "Roosevelt", "Taft", "Wilson", "Harding", "Coolidge",
    "Hoover", "Roosevelt", "Truman", "Eisenhower", "Kennedy", "Johnson",
    "Nixon", "Ford", "Carter", "Reagan"]

a = int(raw_input(""))
a=a-1

if (a < 0 or a>39):
    print "Error"
else:
    print n[a]