Recognize a Complete Additive Digit Partition
Company: Epic Systems
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: medium
Interview Round: Other
### Problem
Return whether num can be split into at least three decimal numbers such that every number after the first two equals their sum. Use the entire digit string in order. Multi-digit numbers cannot begin with zero, but a single zero is valid.
```cpp
bool isAdditiveNumber(string num);
```
### Examples
```text
num = "1235" -> true
num = "1023" -> false
```
### Constraints
- num contains 1 through 35 decimal digits.
### Optional follow-up
How would you handle overflow for very large input integers?
Overview: Recognize a Complete Additive Digit Partition. Return whether num can be split into at least three decimal numbers such that every number after the first two equals their sum. Use the entire digit string in