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 :-)
Set the array elements whose value is 13 to 0
Center of mass
Is the input divisible by 3?
Number construction I
Mean number of letters per word (Hard)
The sliding puzzle: 3D
Mean number of letters per word (Easy)
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