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 PYTHON3):

Solution:
print([0,4,22,27,58,85,94,121,166,202,265,274,319,346,355,\
       378,382,391,438,454,483,517,526,535,562,576,588,\
       627,634,636,645][int(input())])