def find_lines_with_date(file_path):
    result = ""
    try:
        with open(file_path, 'r', encoding='utf-8') as file:
            for line_number, line in enumerate(file, start=1):
                for i in range(len(line) - 6):
                    if (
                        line[i:i+2] == "19" and
                        line[i+2:i+4].isdigit() and
                        line[i+4:i+7] == " r."
                    ):
                        result += line
                        break
    except Exception as e:
        print(f"An error occurred: {e}")
    print(result)

find_lines_with_date("TaskA03/simple.in")
find_lines_with_date("TaskA03/polish_wiki_excerpt.in")