Codeforces Round #FF (Div. 1) |
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Finished |

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dp

implementation

two pointers

*1600

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A. DZY Loves Sequences

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputDZY has a sequence *a*, consisting of *n* integers.

We'll call a sequence *a*_{i}, *a*_{i + 1}, ..., *a*_{j} (1 ≤ *i* ≤ *j* ≤ *n*) a subsegment of the sequence *a*. The value (*j* - *i* + 1) denotes the length of the subsegment.

Your task is to find the longest subsegment of *a*, such that it is possible to change at most one number (change one number to any integer you want) from the subsegment to make the subsegment strictly increasing.

You only need to output the length of the subsegment you find.

Input

The first line contains integer *n* (1 ≤ *n* ≤ 10^{5}). The next line contains *n* integers *a*_{1}, *a*_{2}, ..., *a*_{n} (1 ≤ *a*_{i} ≤ 10^{9}).

Output

In a single line print the answer to the problem — the maximum length of the required subsegment.

Examples

Input

6

7 2 3 1 5 6

Output

5

Note

You can choose subsegment *a*_{2}, *a*_{3}, *a*_{4}, *a*_{5}, *a*_{6} and change its 3rd element (that is *a*_{4}) to 4.

Codeforces (c) Copyright 2010-2024 Mike Mirzayanov

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