1780. Check if Number is a Sum of Powers of Three

https://leetcode.com/problems/check-if-number-is-a-sum-of-powers-of-three

Description

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 == 3x.

Example 1:

**Input:** n = 12
**Output:** true
**Explanation:** 12 = 31 + 32

Example 2:

**Input:** n = 91
**Output:** true
**Explanation:** 91 = 30 + 32 + 34

Example 3:

**Input:** n = 21
**Output:** false

Constraints:

• 1 <= n <= 107

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