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:
import sys
n = int(input())
print([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][n-1])
"""
n, *prices = [int(c) for c in sys.stdin.readline().split()]

prices = sorted(prices)

for i in range(n):
    sys.stdout.write(str(prices[i])+" ")
"""
"""
d = [int(input()) == 1, int(input()) == 1, int(input()) == 1, int(input()) == 1]

result = [[0, 0, 0, 0],[0, 0]]
result[0][0] = d[0] or d[1]
result[0][1] = d[2] and d[3]
result[0][2] = d[1] != d[2]
result[0][3] = d[0] or d[3]

result[1][0] = result[0][0] != result[0][1]
result[1][1] = result[0][2] and result[0][3]

print(result[1][0] or result[1][1])
"""