WHY THIS code give segmentation error?

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1

Please help mee in this code.It is showing segmentation fault…

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please help It is urgent…

2

Why?

Please link to the Problem you are trying to solve so that we know the Input Format, Constraints, etc.

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4

Please can u see now why is this error displaying??

5

When s1.empty() && str[i] == ‘)’, then it will try to access top most element which is not present and thus produces SIGSEV.

BTW you can solve it without stack : Submission #85371917 - Codeforces

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