import requests
import re
from math import gcd


def get_numbers_from_response(response_text):
    pattern = r'GCD \(\s*(\d+)\s*,\s*(\d+)\s*\)'
    match = re.search(pattern, response_text)
    if match:
        return int(match.group(1)), int(match.group(2))
    return None, None


url = "http://ctf.mf.grsu.by/tasks/0036c5939fc80c0a4e050fed3cd7d11a/"
cookies = {'PHPSESSID': 'ibui2c422kntibj9uv6glkbj3l'}

response = requests.get(url, cookies=cookies)

a, b = get_numbers_from_response(response.text)

if a and b:
    answer = gcd(a, b)

    post_url = "http://ctf.mf.grsu.by/tasks/0036c5939fc80c0a4e050fed3cd7d11a/index2.php"
    post_data = {'ans': answer}

    post_response = requests.post(post_url, data=post_data, cookies=cookies)

    print(post_response.text)
else:
    print("aboba")