Ferrarixxx's blog

Help Required in checking the correctness of code
By Ferrarixxx, history, 4 years ago, In English

Hi guys ,
I think the editorial's solution (https://codeforces.net/blog/entry/78864)
for this (https://codeforces.net/contest/1367/problem/D) problem is wrong

Proof:
Try this test case :
1
cbazzkjbsdf
3
3 1 0

For the above testcase actual output should have been abc
but according to almost all codes(including editorialist's) its ksz

So am i correct ?? or have i made a mistake in understanding the problem??

I resort to your generous replies.

Thanks in Advance.

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Comments Comments (4)
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4 years ago, # |
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For the input,

1
cbazzkjbsdf
3
2 1 0

"cba" is incorrect. For "cba", the array b can be evaluated as -

b[0] = 0, as there are no characters in cba greater than c.

b[1] = |1 — 2| = 1, as only c is greater than the second character i.e. b.

b[2] = |1 — 3| = 2, similarly as above.

I think you are misinterpreting the problem.

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4 years ago, # |
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Codeforces community , Please help me out here

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    4 years ago, # ^ |
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    abc is also correct for this test

    but try to come up with an idea that would work for every test case (Editorial and other solutions use such an idea).

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4 years ago, # |
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If there are several answers, output any.

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