Wat What's the intended sol then?

doesnt the intended solution also need appending 0s to existing solutions?

Oh my god what happened how does this have 6 revisions

At least the set seems to have all digits from $$$0$$$ to $$$9$$$, and I was able to find this Quora link related to this problem that could have been in the training data. However, it does not seem to have the set of numbers that the OP pointed out.

The latest ChatGPT can run Python code online.

So it technically generated some Python code and ran it.

I checked and this is the code it ran:

def find_large_solution_for_n(n, min_count):
    # Smallest and largest n-digit numbers
    smallest_n_digit = 10 ** (n - 1)
    largest_n_digit = (10 ** n) - 1

    # Square root range for generating n-digit squares
    lower_bound = math.ceil(math.sqrt(smallest_n_digit))
    upper_bound = math.floor(math.sqrt(largest_n_digit))

    # Dictionary to store squares by their digit multisets
    squares_by_multiset = {}

    # Generate all possible squares within the range and group them by digit multisets
    for i in range(lower_bound, upper_bound + 1):
        square = i ** 2
        if len(str(square)) == n:
            # Create a multiset key (sorted tuple of digits)
            multiset_key = tuple(sorted(str(square)))

            # Add the square number to the appropriate list in the dictionary
            if multiset_key in squares_by_multiset:
                squares_by_multiset[multiset_key].append(square)
            else:
                squares_by_multiset[multiset_key] = [square]

            # Return the first set found with at least min_count elements
            if len(squares_by_multiset[multiset_key]) >= min_count:
                return squares_by_multiset[multiset_key]

    return None

# Find a solution for n = 11 with more than 99 square numbers
large_solution_for_11 = find_large_solution_for_n(11, 100)
large_solution_for_11

I actually copied ChatGPT's code and messed around a bit offline. I saw some large sol for 9, 11, 13... which makes me conjure it. (Well technically I found the 99+ sol offline myself during the contest with GPT's code. This conversation is more like a test than what I did in contest.)