HG_90's blog

How to solve runtime error?
By HG_90, history, 4 years ago, In English

https://codeforces.me/contest/1364/submission/85603351

pls tell me why the above code shows runtime error on test case 6.

Someone pls correct this code

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4 years ago, # |
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You could assert that the set is not empty here auto it = s_minus_sq.begin(); before dereferencing it.

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    4 years ago, # ^ |
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    Yeah, that's working thanks!

    But I think that the condition never arrives at which s_minus_sq.size() is 0 and control is at else if . That's why I haven't checked that condition.

    Can you tell me what lead you to that?

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      4 years ago, # ^ |
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      The Checker Diagnostics looks like access to "bad" memory, and I did not see any other line of suspicious code.

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