why this code is not correct?
s = summ(v)
sorry mate, this is unfair for those who actually came up with a compact solution
No need to be sorry.
Personally I think the regexp should be always forbidden.
I used it (and I had never thought about it before) because it seems that everyone is using it.
Project Euler: Problem 7, Nth prime
Matrix with different incremental runs
06 - Matrix Equations 3
Length of a short side
Sum of Two Numbers
Find the starting index of a consecutive condition
Triangle of numbers
Remove the first, third and fifth rows of a matrix
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