0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-11-28 06:16:27 +00:00
OI-codes/problem/P1096/P1096.py
2020-10-15 21:17:38 +08:00

1 line
28 B
Python

print(2**(int(input())+1)-2)