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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.
Input is coordinates of all points. You just have to calculate two points which have max distance between them. you have to output the max distance you get.
it asks the result to be sorted in lexicographically order.