Leetcode 506. Relative Ranks

class Solution:
    def findRelativeRanks(self, score: List[int]) -> List[str]:
        n = len(score)
        ranks = ["Gold Medal", "Silver Medal", "Bronze Medal"]
        ranks += [str(i) for i in range(4, n+1)]
        mapping = dict(zip(sorted(score, reverse=True), ranks))
        result = [mapping[score[i]] for i in range(n)]
        return result