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3. Questions will be answered during the contest at specific times: in the first 2 hours after the start, every 4 hours during the contest (for 1–2 hours each time), and in the last 2 hours before the contest ends.
| You can download the initial question file from [this link](https://codern.org/contest/assignments/87888/download_problem_initial_project/305562/).|
| :--: |
A lodging booking website has asked for your help to determine if the accommodation registered on its site is being rented at a reasonable price. For this purpose, they provide you with a dataset of information about the accommodations registered on their site so far, and they ask you to train a model that can predict the price of an accommodation based on its specifications.
## Evaluation Criteria
The `R2 Score` metric is used to evaluate your model. To receive a score in this question, your model must have an `R2 Score` of at least 0.4, and in this case, the final score will be calculated based on the following formula:
$$round(r2score, 3) \times 250$$
If your model does not reach the threshold, the received score will be **zero**.
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**Attention**
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During the competition, the score you see is only the result of your model's evaluation on 30 percent of the test data. After the competition time ends, your **final score** will be calculated on the remaining 70 percent.
This is done to prevent overfitting (`overfitting`) and maintain the generality of the model to ensure that models that have been overfitted will have a lower final score.
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## How to Submit the Answer
To answer this question, first open the notebook file provided in the initial file and then follow the steps as requested. Finally, after running the answer-generating cell (the last cell of the notebook file), submit the created `result.zip` file.
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**Important Warning**
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Please note that before running the answer-generating cell, you must have saved the changes made in the notebook using the shortcut key `ctrl+s`, otherwise, at the end of the competition, your **score** will change to **zero**.
Also, if you are using Colab to run this notebook file, before submitting the `result.zip` file, download the latest version of your notebook and place it inside the submission file.
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?How Much Per Night
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