151. Power of Two
EasyBits
Print YES if n is a power of two, else NO.
Input format
A single integer n.
Output format
YES or NO
Example 1
Input
1
Output
YES
Example 2
Input
16
Output
YES
Constraints
−10¹⁸ ≤ n ≤ 10¹⁸
Read input from standard input and print the answer to standard output. Your code is judged against 6 test cases, most of them hidden.
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