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:
n = int(input())
a = [1] * (n + 1)
for i in range(1, n + 1):
    if i == 13:
        a[i] = 8092
    else:
        a[i] = a[i - 1] + a[i - 1];
print(a[n])