def load_reviews(filepath: str) -> list:
    return None

def filter_by_rating(reviews: list, min_rating: int, max_rating: int) -> list:
    return None

def get_average_rating(reviews: list) -> float:
    return None

def count_words_in_review(review: dict) -> int:
    return None

def find_longest_review(reviews: list) -> dict:
    return None

def build_word_frequency(reviews: list) -> dict:
    return None

def get_top_words(freq_dict: dict, n: int) -> list:
    return None

def group_reviews_by_rating(reviews: list) -> dict:
    return None

def format_summary(reviews: list, top_words: list, avg_rating: float) -> str:
    return None

def main():
    print("\nПрограмма завершена!")

if __name__ == '__main__':
    main()