A15657 | Cut the Triangle
时间限制1s
内存限制256MB
通过 / 提交0/0
题目描述
You are given a non-degenerate triangle (a non-degenerate triangle is a triangle with positive area). The vertices of the triangle have coordinates $(x_1, y_1)$ , $(x_2, y_2)$ and $(x_3, y_3)$ .
You want to draw a straight line to cut the triangle into two non-degenerate triangles. Furthermore, the line you draw should be either horizontal or vertical.
Can you draw the line to meet all the constraints?
Here are some suitable ways to draw the line:
However, these ways to draw the line are not suitable (the first line cuts the triangle into a triangle and a quadrangle; the second line doesn't cut the triangle at all; the third line is neither horizontal nor vertical):

You want to draw a straight line to cut the triangle into two non-degenerate triangles. Furthermore, the line you draw should be either horizontal or vertical.
Can you draw the line to meet all the constraints?
Here are some suitable ways to draw the line:
However, these ways to draw the line are not suitable (the first line cuts the triangle into a triangle and a quadrangle; the second line doesn't cut the triangle at all; the third line is neither horizontal nor vertical):

输入格式
The first line contains one integer $t$ ( $1 \le t \le 10^4$ ) — the number of test cases.
Each test case consists of four lines. The first of them is empty. The $i$ -th of the next three lines contains two integers $x_i$ and $y_i$ ( $1 \le x_i, y_i \le 10^8$ ) — the coordinates of the $i$ -th vertex of the triangle.
Additional constraint on the input: in each test case, the triangle formed by three vertices has positive area (i. e. it is non-degenerate).
Each test case consists of four lines. The first of them is empty. The $i$ -th of the next three lines contains two integers $x_i$ and $y_i$ ( $1 \le x_i, y_i \le 10^8$ ) — the coordinates of the $i$ -th vertex of the triangle.
Additional constraint on the input: in each test case, the triangle formed by three vertices has positive area (i. e. it is non-degenerate).
输出格式
For each test case, print YES if it is possible to cut the triangle according to the statement, or NO otherwise. You may print each letter in any case (YES, yes, Yes will all be recognized as positive answer, NO, no and nO will all be recognized as negative answer).
输入输出样例
输入 #1
4 4 7 6 8 3 5 4 5 4 7 6 8 5 8 1 8 2 5 3 6 6 6 6 3
输出 #1
YES YES YES NO
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