CF196C.Paint Tree

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题目描述

You are given a tree with nn vertexes and nn points on a plane, no three points lie on one straight line.

Your task is to paint the given tree on a plane, using the given points as vertexes.

That is, you should correspond each vertex of the tree to exactly one point and each point should correspond to a vertex. If two vertexes of the tree are connected by an edge, then the corresponding points should have a segment painted between them. The segments that correspond to non-adjacent edges, should not have common points. The segments that correspond to adjacent edges should have exactly one common point.

输入格式

The first line contains an integer nn ( 1<=n<=15001<=n<=1500 ) — the number of vertexes on a tree (as well as the number of chosen points on the plane).

Each of the next n1n-1 lines contains two space-separated integers uiu_{i} and viv_{i} ( 1<=ui,vi<=n1<=u_{i},v_{i}<=n , uiviu_{i}≠v_{i} ) — the numbers of tree vertexes connected by the ii -th edge.

Each of the next nn lines contain two space-separated integers xix_{i} and yiy_{i} ( 109<=xi,yi<=109-10^{9}<=x_{i},y_{i}<=10^{9} ) — the coordinates of the ii -th point on the plane. No three points lie on one straight line.

It is guaranteed that under given constraints problem has a solution.

输出格式

Print nn distinct space-separated integers from 11 to nn : the ii -th number must equal the number of the vertex to place at the ii -th point (the points are numbered in the order, in which they are listed in the input).

If there are several solutions, print any of them.

输入输出样例

  • 输入#1

    3
    1 3
    2 3
    0 0
    1 1
    2 0
    

    输出#1

    1 3 2
    
  • 输入#2

    4
    1 2
    2 3
    1 4
    -1 -2
    3 5
    -3 3
    2 0
    

    输出#2

    4 2 1 3
    

说明/提示

The possible solutions for the sample are given below.

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