Codeforces Round 605 (Div. 3) |
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Finished |
You are given an array $$$a$$$ consisting of $$$n$$$ integers.
You can remove at most one element from this array. Thus, the final length of the array is $$$n-1$$$ or $$$n$$$.
Your task is to calculate the maximum possible length of the strictly increasing contiguous subarray of the remaining array.
Recall that the contiguous subarray $$$a$$$ with indices from $$$l$$$ to $$$r$$$ is $$$a[l \dots r] = a_l, a_{l + 1}, \dots, a_r$$$. The subarray $$$a[l \dots r]$$$ is called strictly increasing if $$$a_l < a_{l+1} < \dots < a_r$$$.
The first line of the input contains one integer $$$n$$$ ($$$2 \le n \le 2 \cdot 10^5$$$) — the number of elements in $$$a$$$.
The second line of the input contains $$$n$$$ integers $$$a_1, a_2, \dots, a_n$$$ ($$$1 \le a_i \le 10^9$$$), where $$$a_i$$$ is the $$$i$$$-th element of $$$a$$$.
Print one integer — the maximum possible length of the strictly increasing contiguous subarray of the array $$$a$$$ after removing at most one element.
5 1 2 5 3 4
4
2 1 2
2
7 6 5 4 3 2 4 3
2
In the first example, you can delete $$$a_3=5$$$. Then the resulting array will be equal to $$$[1, 2, 3, 4]$$$ and the length of its largest increasing subarray will be equal to $$$4$$$.
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