kazama460's blog

Need help in Convex hull problem(my first on convex hull)
By kazama460, history, 7 years ago, In English

I am trying to solve a problem on convex hull(my first problem on convex hull) , but don't know why getting WA. I am using Grahm's scan algo to generate all points of Hull , and then simply calculating the parameter of the hull. please can anyone tell me whats wrong with my code. thank you in advance.

Link to my code

Link to problem

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7 years ago, # |
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Auto comment: topic has been updated by kazama460 (previous revision, new revision, compare).

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7 years ago, # |
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I think the problem is when you are displaying the result. According to the question, the output should only include at most 1 place after decimal. For review you can see my submission — https://www.codechef.com/viewsolution/18489929

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    7 years ago, # ^ |
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    I have tried to use setprecision function , but the problem is that it is giving SIGSEGV (dont know why) , here is the solution with setprecision , it is giving SIGSEGV. Can you help me out in this?

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      7 years ago, # ^ |
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      The runtime error might be due to accessing empty stack or popping from empty stack. I will debug the code shortly.

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        7 years ago, # ^ |
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        Thanx to you man , the problem was indeed the empty stack. after 24 unsuccessful submission , i got it accepted.

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