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$1,500 in prize money and unique problems. Register for the TrialSpark x Coder Cup competition by Feburary 22 before space runs out. Also, TrialSpark is hiring engineers.

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Of the first 10 submissions producing the correct answer, one will be randomly selected to win $100. The winning solution will be shared for others to learn from. Please remember to add your code or methodology after submitting the answer if you would like to eligible for the prize. Submissions for prize money are open until 02-21-2020, 00:00:00 UTC.

How many 20 digit numbers n (without any leading zero) exist such that no three consecutive digits of n have a sum greater than 9? https://projecteuler.net/problem=164

You have unlimited submission attempts.

We will email you if you've won and let you know about the next one.

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