题库练习 Very simple problem
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A8017 | Very simple problem

时间限制1s
内存限制256MB
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题目描述

You are given a convex polygon. Count, please, the number of triangles that contain a given point in the plane and their vertices are the vertices of the polygon. It is guaranteed, that the point doesn't lie on the sides and the diagonals of the polygon.

输入格式

The first line contains integer $n$ — the number of vertices of the polygon ( $3<=n<=100000$ ). The polygon description is following: $n$ lines containing coordinates of the vertices in clockwise order (integer $x$ and $y$ not greater than $10^{9}$ by absolute value). It is guaranteed that the given polygon is nondegenerate and convex (no three points lie on the same line).

The next line contains integer $t$ ( $1<=t<=20$ ) — the number of points which you should count the answer for. It is followed by $t$ lines with coordinates of the points (integer $x$ and $y$ not greater than $10^{9}$ by absolute value).

输出格式

The output should contain $t$ integer numbers, each on a separate line, where $i$ -th number is the answer for the $i$ -th point.

Please, do not use %lld specificator to read or write 64-bit integers in C++. It is preffered to use cin (also you may use %I64d).

输入输出样例

输入 #1
4
5 0
0 0
0 5
5 5
1
1 3
输出 #1
2
输入 #2
3
0 0
0 5
5 0
2
1 1
10 10
输出 #2
1
0
输入 #3
5
7 6
6 3
4 1
1 2
2 4
4
3 3
2 3
5 5
4 2
输出 #3
5
3
3
4
C++ 编辑器
输入
输出