madlad's blog

By madlad, history, 21 month(s) ago, In English

I was trying to solve this problem: https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=1402

I used simple BFS to solve the problem but I am getting WA.

My code: https://ideone.com/ljuSH7

There are no test cases for this on uDebug too and I am struggling to find out where I went wrong.

I just calculated the min time = time needed to complete all the jobs that need to be completed before 'x' and the max time = Total time — the time needed to complete all the jobs that require 'x' to be completed first and then I just calculated the difference of it.

Can someone help me?

 
 
 
 
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21 month(s) ago, # |
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Anyone?

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    3 months ago, # ^ |
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    madlad did you manage to solve it? or anyone else?

    I used code for topological sort. Once by ejecting the node asap and then by delaying it as long as possible. Still getting WA. Here's my code: https://ideone.com/VPbOmf

    Any help would be highly appreciated!

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18 months ago, # |
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Your idea is correct, there must be something wrong in implementation.

I am sharing link to my code. Here I have used two graphs, one for min_time and one for max_time.

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    8 months ago, # ^ |
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    if you don't mind can you explain your solution a bit more or explain what is required in the problem as i cant just understand it thanks in advance

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12 months ago, # |
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If anyone solved this problem.Please post if any corer cases?

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12 months ago, # |
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Done :) Many negative answers :(