AT_abc439_a [ABC439A] 2^n - 2*n

You are given an integer $ N $ . Compute and output the value of $ 2^N-2N $ .

The input is given from Standard Input in the following format: > $ N $

Output the answer.

### Sample Explanation 1 The value of $ N $ given in this input is $ 1 $ , so output the value of $ 2^1 - 2 \times 1 $ , which is $ 0 $ . ### Sample Explanation 2 The value of $ N $ given in this input is $ 2 $ , so output the value of $ 2^2 - 2 \times 2 $ , which is $ 0 $ . ### Sample Explanation 3 The value of $ N $ given in this input is $ 11 $ , so output the value of $ 2^{11} - 2 \times 11 $ , which is $ 2026 $ . ### Constraints - $ N $ is an integer between $ 1 $ and $ 11 $ , inclusive.