AT_abc440_a [ABC440A] Octave

The frequency of a sound doubles for every increase of $ 1 $ octave in pitch. If the pitch of a sound with frequency $ X $ hertz is raised by $ Y $ octaves, what will its frequency be in hertz?

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

Output the answer as an integer in one line. Omit the unit (hertz).

### Sample Explanation 1 For a sound $ 2 $ octaves above a sound with frequency $ 110 $ hertz, its frequency is $ 110 \times 2 \times 2 = 440 $ hertz. ### Sample Explanation 2 For a sound $ 3 $ octaves above a sound with frequency $ 233 $ hertz, its frequency is $ 233 \times 2 \times 2 \times 2 = 1864 $ hertz. ### Sample Explanation 3 For a sound $ 1 $ octave above a sound with frequency $ 432 $ hertz, its frequency is $ 432 \times 2 = 864 $ hertz. ### Constraints - $ 1 \leq X \leq 444 $ - $ 1 \leq Y \leq 3 $ - All input values are integers.