Unexpected Behaviour of set and unordered_set

help
1

Submitted the same code one with set and other with unordered_set. One got AC while the order got WA.
AC (set) : CodeChef: Practical coding for everyone
WA (unordered_set) : CodeChef: Practical coding for everyone
The question is from July Long Challenge (Parity Again).
PS: Ordering doesn’t matter for the question.
Please help.
@vijju123 @l_returns @anon55659401

2

You shouldn’t insert anything while iterating it. I think that’s the issue.
Won’t go in understanding your code in much details unless you think it’s not the issue.

3 Likes
3

Got it. Thanks for the help.

1 Like
4

I also had the same problem with some code using unordered map
in codechef compiler it was giving wrong answer but on other online compilers it was giving correct answer.
Don’t know why