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How can I upload a photo of my solution?

We no longer allow users to upload photos of their solutions, in order to submit a solution please follow these steps:

1. Log in at

2. Navigate to the exercise you'd like to solve

3. Click the big, red "upload your solution" button

4. Write up your solution and press "submit"

Note that as of right now, solutions cannot be written inside the apps- it has to be done through the website.

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