1785. Minimum Elements to Add to Form a Given Sum

You are given an integer array nums and two integers limit and goal. The array nums has an interesting property that abs(nums[i]) <= limit.

Return the minimum number of elements you need to add to make the sum of the array equal to goal. The array must maintain its property that abs(nums[i]) <= limit.

Note that abs(x) equals x if x >= 0, and -x otherwise.

class Solution {
public:
    int minElements(vector<int>& nums, int limit, int goal) {
        long long sum = 0;
        for(auto& num : nums)
            sum += num;
        int cnt = abs(sum - goal) / limit + (abs(sum - goal) % limit == 0 ? 0 : 1);
        return cnt;
    }
};