Learned from Solution 883700, by Tim. run this just for checking: I reckon that function "sum" in that solution is redundant, and my guessing seems to be right.
Quick response! Seems 0 is better than infinity...
lol~ yes, in terms of code size, 0 is better than Inf :-)
Inner product of two vectors
Read a Soroban Abacus
Back to basics 9 - Indexed References
Remove the two elements next to NaN value
Sorting integers by their digits (Level 4)
Factorizing a number into a given number of factors
Increasing sub-sequence (Level 2)
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