VandanRogheliya's blog

2 Mathematically Identical Solutions, one is AC other is WA
By VandanRogheliya, history, 4 years ago, In English

I was trying to solve this question.

First I wrote this solution which got WA.

Then after checking other already AC solutions I changed the solution to this which got AC.

Both solutions look mathematically identical to me.

Can anyone please explain to me where I am wrong?

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4 years ago, # |
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In the first submission, there might be an overflow while multiplying (b - 1) * g / n (or m) and (d - 1) * g / n (or m) but this isn't flagged as a runtime error as it is only an RTE case for signed numbers (you are using unsigned numbers). In your second submission, you essentially do the same thing but pre-dividing n and m won't cause overflow.

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