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2048\. Next Greater Numerically Balanced Number
Medium
An integer `x` is **numerically balanced** if for every digit `d` in the number `x`, there are **exactly** `d` occurrences of that digit in `x`.
Given an integer `n`, return _the **smallest numerically balanced** number **strictly greater** than_ `n`_._
**Example 1:**
**Input:** n = 1
**Output:** 22
**Explanation:**
22 is numerically balanced since:
- The digit 2 occurs 2 times.
It is also the smallest numerically balanced number strictly greater than 1.
**Example 2:**
**Input:** n = 1000
**Output:** 1333
**Explanation:**
1333 is numerically balanced since:
- The digit 1 occurs 1 time.
- The digit 3 occurs 3 times.
It is also the smallest numerically balanced number strictly greater than 1000. Note that 1022 cannot be the answer because 0 appeared more than 0 times.
**Example 3:**
**Input:** n = 3000
**Output:** 3133
**Explanation:**
3133 is numerically balanced since:
- The digit 1 occurs 1 time.
- The digit 3 occurs 3 times.
It is also the smallest numerically balanced number strictly greater than 3000.
**Constraints:**
* 0 <= n <= 106