For this case, a number is defined ugly if it has prime factors consisting of only elements of x.
Find the nth ugly number.
so the ans is 15.
Unlike the previous two "ugly()" problems, in this one it appears that the number "1" is not considered ugly.
Knight's Tour Checker
Back to basics 12 - Input Arguments
length of string on cylinder
Matrix of almost all zeros, except for main diagonal
I'm going to enjoy watching you calculate, Mr Anderson
Last non-zero digit
Rotate a matrix without using rot90
How lucky r u ?
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