46. Pow(x, n)

MediumMath

Implement pow(x, n), which calculates x raised to the power n (i.e., x^n).

Examples

Input: 2.00000 10

Output: 1024.0

Explanation: 2^10 = 1024.

Constraints

  • -100.0 < x < 100.0
  • -2^31 <= n <= 2^31 - 1
  • n is an integer.
  • Either x is not zero or n > 0.
  • -10^4 <= x^n <= 10^4
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