Minimum Cost of Buying Candies With Discount LeetCode solution in Python

1
# Runtime: 72 ms (Top 49.84%) | Memory: 13.8 MB (Top 58.81%)
2
class Solution:
3
    def minimumCost(self, cost: List[int]) -> int:
4
        cost.sort(reverse=True)
5
        res, i, N = 0, 0, len(cost)
6
        while i < N:
7
            res += sum(cost[i : i + 2])
8
            i += 3
9
        return res