Codeforces Round 138 (Div. 1)
E
Planar Graph
Codeforces
3000
原题
← D→
翻译中…

A graph is called planar, if it can be drawn in such a way that its edges intersect only at their vertexes.

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An articulation point is such a vertex of an undirected graph, that when removed increases the number of connected components of the graph.

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A bridge is such an edge of an undirected graph, that when removed increases the number of connected components of the graph.

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You've got a connected undirected planar graph consisting of $*n*$ vertexes, numbered from $1$ to $*n*$, drawn on the plane. The graph has no bridges, articulation points, loops and multiple edges. You are also given $*q*$ queries. Each query is a cycle in the graph. The query response is the number of graph vertexes, which (if you draw a graph and the cycle on the plane) are located either inside the cycle, or on it. Write a program that, given the graph and the queries, will answer each query.

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Input

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The first line contains two space-separated integers $*n*$ and $*m*$ ($3 ≤ *n*, *m* ≤ 10^{5}$) — the number of vertexes and edges of the graph. Next $*m*$ lines contain the edges of the graph: the $*i*$-th line contains two space-separated integers $*u*_{*i*}$ and $*v*_{*i*}$ ($1 ≤ *u*_{*i*}, *v*_{*i*} ≤ *n*$) — the numbers of vertexes, connecting the $*i*$-th edge. The next $*n*$ lines contain the positions of the planar graph vertexes on the plane: the $*i*$-th line contains a pair of space-separated integers $*x*_{*i*}$ and $*y*_{*i*}$ ($|*x*_{*i*}|, |*y*_{*i*}| ≤ 10^{9})$ — the coordinates of the $*i*$-th vertex of the graph on the plane.

翻译中…

The next line contains integer $*q*$ ($1 ≤ *q* ≤ 10^{5}$) — the number of queries. Then follow $*q*$ lines that describe the queries: the $*i*$-th line contains the sequence of space-separated integers $*k*_{*i*}$, $*a*_{1}$, $*a*_{2}$, ..., $*a*_{*k*_{*i*}}$ ($1 ≤ *a*_{*j*} ≤ *n*; *k*_{*i*} > 2$), where $*k*_{*i*}$ is the cycle length in the $*i*$-th query, $*a*_{*j*}$ are numbers of the vertexes that form a cycle. The numbers of vertexes in the cycle are given in the clockwise or counterclockwise order. The given cycles are simple, that is they cannot go through a graph vertex more than once. The total length of all cycles in all queries does not exceed $10^{5}$.

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It is guaranteed that the given graph contains no bridges, articulation points, loops and multiple edges. It is guaranteed that the edge segments can have common points only at the graph's vertexes.

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Output

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For each query print a single integer — the number of vertexes inside the cycle or on it. Print the answers in the order, in which the queries follow in the input. Separate the numbers by spaces.

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样例

Input #1
3 3
1 2
2 3
3 1
0 0
1 0
0 1
1
3 1 2 3
Output #1
3
InputCopy OutputCopy
Input #2
5 8
1 2
2 3
3 4
4 1
1 5
2 5
3 5
4 5
0 0
2 0
2 2
0 2
1 1
1
4 1 2 3 4
Output #2
5
InputCopy OutputCopy
Input #3
4 5
1 2
2 3
3 4
4 1
2 4
0 0
1 0
1 1
0 1
3
3 1 2 4
3 4 2 3
4 1 2 3 4
Output #3
3
3
4
InputCopy OutputCopy
题目信息
题号
223E
时间限制
1 s
内存限制
256 MB
标签
网络流
计算几何
图论

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。