Estimate a using inverse matrix calculation. This is principle of linear regression.
As a friendly reminder, we can see the test suite, so it makes the problem more challenging if the solution is not explicitly in the test suite.
The Test Suite needs to allow for floating-point errors in all test cases, as demonstrated in Solution 1575603. (Refer to Problem 44690.) Also, there should be at least four test cases for every problem.
Back to basics 11 - Max Integer
Make an awesome ramp for a tiny motorcycle stuntman
Set x value to each even index of vector y.
Replace 0 to NaN!
Analyze observation data
Weighted moving average
Make roundn function
Solve system of equation!
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