2^k + 2^n
Execution time limit is 1 second
Runtime memory usage limit is 64 megabytes
Two different integers k and n are given. Print the value 2^k + 2^n, using bit operations only.
Input
Two different integers k and n (0 ≤ k, n ≤ 30).
Output
Print the number 2^k + 2^n.
Examples
Input #1
Answer #1
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