Is Power of Two
Check whether a number is a power of two.
Input format
One line with a single integer N (N >= 1).
Output format
Print true if N is a power of two (1, 2, 4, 8, 16, ...), otherwise false.
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
1Expected output
trueExample 2
Input
2Expected output
true