Problem 381. Angle between two vectors
It would be good to have a more challenging test suite - see the guidelines for problems. Some solvers write code that is just a lookup table for the test cases, and having only one case makes it trivial to do this.
Also, your test should not use string comparison to evaluate what is a purely numerical computation. It would be better if you subtracted the correct answer from the proposed answer, and then compared the absolute value to a am all threshold, such as 1e-6.
Thnaks for your comments. It was my first or second problem sent to CODY. I didn't catch all the tricks to make strong test cases yet.
I have rescored the problem after adding more robust test suites.
only one test case runs, others are not working
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