2894. Divisible and Non-divisible Sums Difference

You are given positive integers n and m. Define two integers as follows: - num1: The sum of all integers in the range [1, n] (both inclusive) that are not divisible by m. - num2: The sum of all integers in the range [1, n] (both inclusive) that are divisible by m. Return the integer num1 - num2. Example 1: Input: n = 10, m = 3 Output: 19 Explanation: In the given example: - Integers in the