110 lines
3.1 KiB
Python
110 lines
3.1 KiB
Python
#!/usr/bin/env python3
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import json
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import sys
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import cloudscraper
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from bs4 import BeautifulSoup
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def scrape(url: str):
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try:
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scraper = cloudscraper.create_scraper()
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response = scraper.get(url, timeout=10)
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response.raise_for_status()
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soup = BeautifulSoup(response.text, "html.parser")
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tests = []
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input_sections = soup.find_all("div", class_="input")
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output_sections = soup.find_all("div", class_="output")
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for inp_section, out_section in zip(input_sections, output_sections):
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inp_pre = inp_section.find("pre")
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out_pre = out_section.find("pre")
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if inp_pre and out_pre:
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input_lines = []
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output_lines = []
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for line_div in inp_pre.find_all("div", class_="test-example-line"):
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input_lines.append(line_div.get_text().strip())
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output_divs = out_pre.find_all("div", class_="test-example-line")
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if not output_divs:
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output_text_raw = out_pre.get_text().strip().replace("\r", "")
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output_lines = [
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line.strip()
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for line in output_text_raw.split("\n")
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if line.strip()
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]
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else:
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for line_div in output_divs:
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output_lines.append(line_div.get_text().strip())
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if input_lines and output_lines:
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input_text = "\n".join(input_lines)
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output_text = "\n".join(output_lines)
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tests.append((input_text, output_text))
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return tests
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except Exception as e:
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print(f"CloudScraper failed: {e}", file=sys.stderr)
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return []
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def parse_problem_url(contest_id: str, problem_letter: str) -> str:
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return (
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f"https://codeforces.com/contest/{contest_id}/problem/{problem_letter.upper()}"
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)
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def scrape_sample_tests(url: str):
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print(f"Scraping: {url}", file=sys.stderr)
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return scrape(url)
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def main():
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if len(sys.argv) != 3:
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result = {
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"success": False,
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"error": "Usage: codeforces.py <contest_id> <problem_letter>",
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"problem_id": None,
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}
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print(json.dumps(result))
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sys.exit(1)
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contest_id = sys.argv[1]
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problem_letter = sys.argv[2]
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problem_id = contest_id + problem_letter.lower()
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url = parse_problem_url(contest_id, problem_letter)
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tests = scrape_sample_tests(url)
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if not tests:
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result = {
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"success": False,
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"error": f"No tests found for {contest_id} {problem_letter}",
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"problem_id": problem_id,
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"url": url,
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}
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print(json.dumps(result))
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sys.exit(1)
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test_cases = []
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for input_data, output_data in tests:
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test_cases.append({"input": input_data, "output": output_data})
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result = {
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"success": True,
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"problem_id": problem_id,
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"url": url,
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"test_cases": test_cases,
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}
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print(json.dumps(result))
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if __name__ == "__main__":
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main()
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