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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.
Test cases are still wonky. Random test cases had identical successive inputs; first was deemed correct, second was supposedly wrong. See below:
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Input: 713 31334
Card Number: { 7 1 3 3 1 3 3 4 }
Multiplied: { 14 1 6 3 2 3 6 4 }
Subtracted: { 5 1 6 3 2 3 6 4 }
Sum: 30
Valid? True
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Input: 713 31334
Card Number: { 7 1 3 3 1 3 3 4 }
Multiplied: { 14 1 6 3 2 3 6 4 }
Subtracted: { 5 1 6 3 2 3 6 4 }
Sum: 30
Valid? True