A8017 | Very simple problem
时间限制1s
内存限制256MB
通过 / 提交0/0
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).
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).
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
暂无题解
C++ 编辑器
输入
输出
可保存默认模板;新题优先使用已保存模板。
当前快捷键仅展示,暂不支持修改。
- 撤销
Ctrl / ⌘ + Z - 重做
Ctrl / ⌘ + Y - 查找
Ctrl / ⌘ + F - 全选
Ctrl / ⌘ + A - 复制
Ctrl / ⌘ + C - 剪切
Ctrl / ⌘ + X - 粘贴
Ctrl / ⌘ + V - 自动排版
工具栏排版按钮 - 草稿保存
编辑时自动保存到本机
历史
提交记录
状态说明时间源码
AI
作答助手
你好,我是作答助手。可以问思路、复杂度、样例含义或代码报错原因;不会直接给出完整 AC 代码。
确定要清空代码吗?
提交通过
评测结果:Accepted