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SPOJ [ BRCKTS — Brackets ] problem.
Автор deepak_097, история, 6 лет назад, По-английски

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I am getting WA on this question can't figure it out where I am going wrong. I tested many cases in which my code is passing correctly :(. Please help me to get rid of this problem.

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6 лет назад, # |
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Your update function.

Instead of if(s==idx)

Write if(s==e) and you should be good to go.

Just the statement if(s==idx) doesn't check if it's a leaf node as well, so it will modify every time a segment tree node starts with 's'.

Test case, in case you want to see a difference:

2 )) 2 1 0

Your code outputs NO, after changing to s==e, it outputs YES, answer is YES.

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