F. Maximum White Subtreetime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou are given a tree consisting of n vertices. A tree is a connected undirected graph with n-1 edges. Each vertex v of this tree has a color assigned to it (a_v = 1 if the vertex v is white and 0 if the vertex v is black).You have to solve the following problem for each vertex v: what is the maximum difference between the number of white and the number of black vertices you can obtain if you choose some subtree of the given tree that contains the vertex v? The subtree of the tree is the connected subgraph of the given tree. More formally, if you choose the subtree that contains cnt_w white vertices and cnt_b black vertices, you have to maximize cnt_w - cnt_b.InputThe first line of the input contains one integer n (2 \le n \le 2 \cdot 10^5) — the number of vertices in the tree.The second line of the input contains n integers a_1, a_2, \dots, a_n (0 \le a_i \le 1), where a_i is the color of the i-th vertex.Each of the next n-1 lines describes an edge of the tree. Edge i is denoted by two integers u_i and v_i, the labels of vertices it connects (1 \le u_i, v_i \le n, u_i \ne v_i).It is guaranteed that the given edges form a tree.OutputPrint n integers res_1, res_2, \dots, res_n, where res_i is the maximum possible difference between the number of white and black vertices in some subtree that contains the vertex i.ExamplesInput
9
0 1 1 1 0 0 0 0 1
1 2
1 3
3 4
3 5
2 6
4 7
6 8
5 9
Output
2 2 2 2 2 1 1 0 2 
Input
4
0 0 1 0
1 2
1 3
1 4
Output
0 -1 1 -1 
NoteThe first example is shown below:The black vertices have bold borders.In the second example, the best subtree for vertices 2, 3 and 4 are vertices 2, 3 and 4 correspondingly. And the best subtree for the vertex 1 is the subtree consisting of vertices 1 and 3.
9
0 1 1 1 0 0 0 0 1
1 2
1 3
3 4
3 5
2 6
4 7
6 8
5 9

2 2 2 2 2 1 1 0 2  
['dfs and similar', 'dp', 'graphs', 'trees', '*1800']