The value of a node is the product of all the node in its subtree. So how do you update all the parent node when you update the child node ? The original problem is http://mirror.codeforces.com/gym/101466/problem/K.
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How to update all the parent nodes of a child node when you update the child node in a tree ?
Revision en2, by coding_weeb, 2017-09-14 10:44:06
History
Revisions
| Rev. | Lang. | By | When | Δ | Comment | |
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| en2 |
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coding_weeb | 2017-09-14 10:44:06 | 10 | ||
| en1 |
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coding_weeb | 2017-09-14 08:42:21 | 291 | Initial revision (published) |
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