vermish77's blog

Help Please
By vermish77, history, 16 months ago, In English

Please, if anyone can see what is wrong in my submission it is failing on the fourth test case of https://codeforces.net/contest/1749/problem/C. I have used the trick that atleast one 1 must be present so the answer cant be greater than the number of 1 and also for each stage if I have a number less than or equal to it. Then if p are the stages in which we won't need help of 1s then the left k-p are the ones that will make 1s get away as they will be used by Alice.So, my answer is p+(k-p+1)/2. This is my approach, please tell me where am I wrong. https://codeforces.net/contest/1749/submission/213695901

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16 months ago, # |
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Here is a failing test case:

Input:
1
8
1 1 1 1 1 1 5 6

Your Output:
4

Correct Output:
3

I hope you can see for yourself that choosing $$$k \ge 4$$$ does not work for Alice.

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