This problem needs to have its description fixed. It should be "Is the polynomial represented by (v/w) an integer for any integer x except for the roots of w? if the integer x is a root of w, we will have a NaN, which is the case for the test case #1 and the value x=1 for instance.
does it touch ?
Create a vector whose elements depend on the previous element
Replace multiples of 5 with NaN
Is the input divisible by 3?
Dancing with wolves?
Check if sorted
Predicting life and death of a memory-less light bulb
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