AtCoder Beginner Contest 211
F
Rectilinear Polygons
AtCoder
⌀ 2350
原题
← E→
翻译中…

Problem Statement

翻译中…

We have $N$ polygons on the $xy$-plane. Every side of these polygons is parallel to the $x$- or $y$-axis, and every interior angle is $90$ or $270$ degrees. All of these polygons are simple. The $i$-th polygon has $M_i$ corners, the $j$-th of which is $(x_{i, j}, y_{i, j})$. The sides of this polygon are segments connecting the $j$-th and $(j+1)$-th corners. (Assume that $(M_i+1)$-th corner is the $1$-st corner.)

翻译中…

A polygon is simple when... for any two of its sides that are not adjacent, they do not intersect (cross or touch) each other.

翻译中…

You are given $Q$ queries. For each $i = 1, 2, \dots, Q$, the $i$-th query is as follows.

翻译中…
  • Among the $N$ polygons, how many have the point $(X_i + 0.5, Y_i + 0.5)$ inside them?
翻译中…

Constraints

翻译中…
  • $1 \leq N \leq 10^5$
  • $4 \leq M_i \leq 10^5$
  • Each $M_i$ is even.
  • $\sum_i M_i \leq 4 \times 10^5$
  • $0 \leq x_{i, j}, y_{i, j} \leq 10^5$
  • $(x_{i, j}, y_{i, j}) \neq (x_{i, k}, y_{i, k})$ if $j \neq k$.
  • $x_{i, j} = x_{i, j+1}$ for $j = 1, 3, \dots M_i-1$.
  • $y_{i, j} = y_{i, j+1}$ for $j = 2, 4, \dots M_i$. (Assume $y_{i, M_i +1} = y_{i, 1}$.)
  • The given polygons are simple.
  • $1 \leq Q \leq 10^5$
  • $0 \leq X_i, Y_i \lt 10^5$
  • All values in input are integers.
翻译中…

Input

翻译中…

Input is given from Standard Input in the following format:

翻译中…

N
M_1
x_{1, 1} y_{1, 1} x_{1, 2} y_{1, 2} \dots x_{1, M_1} y_{1, M_1}
M_2
x_{2, 1} y_{2, 1} x_{2, 2} y_{2, 2} \dots x_{2, M_2} y_{2, M_2}
\vdots
M_N
x_{N, 1} y_{N, 1} x_{N, 2} y_{N, 2} \dots x_{N, M_N} y_{N, M_N}
Q
X_1 Y_1
X_2 Y_2
\vdots
X_Q Y_Q

翻译中…

Output

翻译中…

Print $Q$ lines. The $i$-th line should contain the answer to the $i$-th query.

翻译中…

样例

Input #1
3
4
1 2 1 4 3 4 3 2
4
2 5 2 3 5 3 5 5
4
5 6 5 5 3 5 3 6
3
1 4
2 3
4 5
Output #1
0
2
1
![image](https://img.atcoder.jp/ghi/5fccf008dddd93f10ebfc7f13d04a0e0.png) Note that different polygons may cross or touch each other.
Input #2
2
4
12 3 12 5 0 5 0 3
12
1 1 1 9 10 9 10 0 4 0 4 6 6 6 6 2 8 2 8 7 2 7 2 1
4
2 6
4 4
6 3
1 8
Output #2
0
2
1
1
![image](https://img.atcoder.jp/ghi/1c97f791a2aadcf5637b1f10736fb820.png) Although the polygons are simple, they may not be convex.
题目信息
题号
abc211_f
时间限制
2 s
内存限制
1024 MB

题面与样例版权归 AtCoder 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。