read question carefully!!!
Design test case carefully....
To avoid non-desired usages, like pi, it is necessary to not place pi in the function name. The function can be searched for forbidden function usages. There is an aspect of cat and mouse in Cody Challenges.
I agree. Disallow usage of PI for fairer scoring of your problem. Neat question!
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Project Euler: Problem 8, Find largest product in a large string of numbers
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find the maximum element of the matrix
Find out missing number from a vector of 9 elements
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Find the solution of algebraic equation
Reverse the elements of an array
Identify the heavier bag
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