题目描述
Problem Statement
We have N points on a two-dimensional infinite coordinate plane.
The i-th point is at (x_i,y_i).
Is there a triple of distinct points lying on the same line among the N points?
Input
Input is given from Standard Input in the following format:
N
x_1 y_1
$\vdots$
x_N y_N
Output
If there is a triple of distinct points lying on the same line, print Yes; otherwise, print No.
Constraints
- All values in input are integers.
- $3 \leq N \leq 10^2$
- $|x_i|, |y_i| \leq 10^3$
- If $i \neq j, (x_i, y_i) \neq (x_j, y_j)$.
Sample Input 1
4
0 1
0 2
0 3
1 1
Sample Output 1
Yes
The three points (0, 1), (0, 2), (0, 3) lie on the line x = 0.
Sample Input 2
14
5 5
0 1
2 5
8 0
2 1
0 0
3 6
8 6
5 9
7 9
3 4
9 2
9 8
7 2
Sample Output 2
No
Sample Input 3
9
8 2
2 3
1 3
3 7
1 0
8 8
5 6
9 7
0 1
Sample Output 3
Yes
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分
样例输入
4
0 1
0 2
0 3
1 1
样例输出
Yes