• About tests and heavy data

As you can see, Checkio does not have time limits for checking solutions. As a result, we don’t use gigantic tests. Our main goal is to promote creativity and quality code in the community. However, we want to help users who are interested in Performance testing as well. We are planning on adding a feature to address this. Performance testing will be optional -- users can write a solution for "simple" cases and performance fans could check solutions with heavy data.