Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

B. Tell Your World

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputConnect the countless points with lines, till we reach the faraway yonder.

There are *n* points on a coordinate plane, the *i*-th of which being (*i*, *y*_{i}).

Determine whether it's possible to draw two parallel and non-overlapping lines, such that every point in the set lies on exactly one of them, and each of them passes through at least one point in the set.

Input

The first line of input contains a positive integer *n* (3 ≤ *n* ≤ 1 000) — the number of points.

The second line contains *n* space-separated integers *y*_{1}, *y*_{2}, ..., *y*_{n} ( - 10^{9} ≤ *y*_{i} ≤ 10^{9}) — the vertical coordinates of each point.

Output

Output "Yes" (without quotes) if it's possible to fulfill the requirements, and "No" otherwise.

You can print each letter in any case (upper or lower).

Examples

Input

5

7 5 8 6 9

Output

Yes

Input

5

-1 -2 0 0 -5

Output

No

Input

5

5 4 3 2 1

Output

No

Input

5

1000000000 0 0 0 0

Output

Yes

Note

In the first example, there are five points: (1, 7), (2, 5), (3, 8), (4, 6) and (5, 9). It's possible to draw a line that passes through points 1, 3, 5, and another one that passes through points 2, 4 and is parallel to the first one.

In the second example, while it's possible to draw two lines that cover all points, they cannot be made parallel.

In the third example, it's impossible to satisfy both requirements at the same time.

Codeforces (c) Copyright 2010-2019 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Oct/14/2019 05:21:50 (h2).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|