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Problem 51570. Count numbers whose reciprocals' decimal expansions terminate

Difficulty:Rate

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Solution 5813543

Submitted on 22 May 2021

Size: 28
Leading solution size is 14.

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3 Comments

3 Comments

Dyuman Joshi on 22 May 2021

Not sure why this fails, can anybody tell why?
Largest number in the test case is smaller than 1e16, this should work

ChrisR on 22 May 2021

Dyuman, your code misses a few powers of 2, for example, for the later tests.

Dyuman Joshi on 25 May 2021

Thanks, found the insufficiency of the method

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