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import os
import sys
import json
from pathlib import Path
from fetch_mathoverflow import batch_loader

ARCHIVE_URL = "https://people.eecs.berkeley.edu/~hendrycks/MATH.tar"
SAVE_PATH = "math-dataset"

def main():  
    Path(SAVE_PATH).mkdir(exist_ok=True)

    archive_path = os.path.join(SAVE_PATH, "archive.tar")
    os.system("wget -O " + archive_path + " " + ARCHIVE_URL)
    os.system("tar -xf " + archive_path + " -C " + SAVE_PATH)
    
    cat_dir = os.path.join(SAVE_PATH, "MATH/train")

    for cat_name in os.listdir(cat_dir): 
        cat_path = os.path.join(cat_dir, cat_name)
        if os.path.isdir(cat_path):
            cat_texts = []
            for f in os.listdir(cat_path): 
                f_path = os.path.join(cat_path, f)

                with open(f_path) as fle: 
                    prob_json = json.load(fle)

                text = "{\\bf Problem.} " + prob_json["problem"] + "\n" +\
                       "{\\bf Level.} " + prob_json["level"] + "\n" +\
                       "{\\bf Type.} " + prob_json["type"] + "\n" +\
                       "{\\bf Solution.} " + prob_json["type"]

                cat_texts.append(text)
            
            batches = batch_loader(cat_texts, 100)
            for i, batch in enumerate(batches): 
                with open(os.path.join(SAVE_PATH, f"{cat_name}_{i}.txt"), "w") as fle: 
                    fle.write("<|endoftext|>\n".join(batch))

    os.system("rm -r " + os.path.join(SAVE_PATH, "MATH"))
    os.remove(archive_path)

if __name__=="__main__": 
    main()