hyman00's blog

By hyman00, history, 2 months ago, In English

In this problem, we need to calculate the shortest path from an origin in a graph with up to $$$10^5$$$ nodes.

The real solution is using dijkstra and priority queue.

But some participants used spfa which can be $$$O(n^2)$$$ in some special datas Like this submission.

Our IOI aker PEIMUDA made two datas

1000000000000000000
24999 99999 25000

1000000000000000000
33332 99998 33333

The answers are

999999999687537499

999999999444505554

They can make the submisssion run up to 5 seconds.

 
 
 
 
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2 months ago, # |
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I hope someone can add these datas and rejudge the problem.