Hi all, I was looking at the editorial of the problem but can't really understand why. ↵
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USACO 2023 February Contest, Gold: Problem 2. Fertilizing Pastures↵
[Problem Link](http://www.usaco.org/index.php?page=viewproblem2&cpid=1306)↵
[Editorial Link](http://www.usaco.org/current/data/sol_prob2_gold_feb23.html)↵
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I understand the part where it says **"If Farmer John visits the subtree of child v at time t, it takes↵
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**dp(v) + sum(v) ⋅t fertilizer."** ↵
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However, when it moves into talking about minimizing the total fertilizers using greedy methods, the sum part disappears. Is the sum * t part not important when considering the order of the children? ↵
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Thank you. ↵
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USACO 2023 February Contest, Gold: Problem 2. Fertilizing Pastures↵
[Problem Link](http://www.usaco.org/index.php?page=viewproblem2&cpid=1306)↵
[Editorial Link](http://www.usaco.org/current/data/sol_prob2_gold_feb23.html)↵
↵
I understand the part where it says **"If Farmer John visits the subtree of child v at time t, it takes
**dp(v) + sum(v) ⋅t fertilizer."** ↵
↵
However, when it moves into talking about minimizing the total fertilizers using greedy methods, the sum part disappears. Is the sum * t part not important when considering the order of the children? ↵
↵
Thank you. ↵
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