Personal Map error

Personal Map error
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I was returning to work on the smallest common multiple and when I run it to refresh in my mind what was going wrong with my code, I realize the code in it, wasn’t mine. And it worked.
So I came back to this and copyed again my code.
I ran it and the page get stuck! I couldn’t do anything else.

What i remember about this challenge is I studyed the wiki to have a hint to optimaze my solution. Then I had a look to other’s solutions, then I just close it and did something else just to “forget” a bit the methods I have seen.
Today I come back for a start refresh on this challenge… and what I have found is another one solution in my map. I didn’t copy/paste any of them… how can it be possible?!