Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
The same happened with me. I had a similar code.
The problem is with the second last line. Notice that population must be an integer, and cannot be a floating point number.
So you need to convert the increment to an integer before you add it to p0.