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There is an undirected tree where each vertex is numbered from 1 to n , and each contains a data value. The sum of a
There is an undirected tree where each vertex is numbered from to n and each contains a data value. The sum of a tree is the sum of all its nodes data values. If an edge is cut, two smaller trees are formed. The difference between two trees is the absolute value of the difference in their sums.
Given a tree, determine which edge to cut so that the resulting trees have a minimal difference between them, then return that difference.
Example
data
edges
In this case, node numbers match their weights for convenience. The graph is shown below.
The values are calculated as follows:
Edge Tree Tree Absolute
Cut Sum Sum Difference
The minimum absolute difference is
Note: The given tree is always rooted at vertex
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