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Given an integer `n`

, return `true`

*if it is possible to represent *`n`

* as the sum of distinct powers of three.* Otherwise, return `false`

.

An integer `y`

is a power of three if there exists an integer `x`

such that `y == 3`

.^{x}

**Example 1:**

Input:n = 12Output:trueExplanation:12 = 3^{1}+ 3^{2}

**Example 2:**

Input:n = 91Output:trueExplanation:91 = 3^{0}+ 3^{2}+ 3^{4}

**Example 3:**

Input:n = 21Output:false

**Constraints:**

`1 <= n <= 10`

^{7}

All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.