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Reachability Problem on Planar DAG
Given a planar directed acyclic graph with $$$N$$$ vertices and $$$M$$$ edges. Given $$$Q$$$ queries of type $$$(a, b)$$$. For each query, output "Yes" if it's possible to reach vertex $$$b$$$ from vertex $$$a$$$ and "No" otherwise.
$$$1 \le N, M, Q \le 300000$$$.
Is it possible to solve this problem under this constraints?
| Rev. | Lang. | By | When | Δ | Comment | |
|---|---|---|---|---|---|---|
| en2 |
|
HideoSatou | 2019-10-08 17:10:01 | 0 | (published) | |
| en1 |
|
HideoSatou | 2019-10-08 16:33:27 | 342 | Initial revision (saved to drafts) |
