3 вопрос

def hits_count(dup_ranks, k):
    return sum([(int)(r <= k) for r in dup_ranks]) / len(dup_ranks)

import math

def dcg_score(dup_ranks, k):
    return sum([1 / math.log2(1 + r) * (r <= k) for r in dup_ranks]) / len(dup_ranks)

dup_ranks = [2, 1, 47, 10, 5]
diff_scores = [hits_count([r], 47) - dcg_score([r], 1) for r in dup_ranks]

# Find the maximum value
max_diff_score = max(diff_scores)

print("Maximum Hits@47 - DCG@1: ", max_diff_score)