You are given an array $$$[a_1, a_2, \ldots a_n]$$$ consisting of integers between $$$0$$$ and $$$10^9$$$. You have to split this array into several segments (possibly one) in such a way that each element belongs to exactly one segment.
Let the first segment be the array $$$[a_{l_1}, a_{l_1 + 1}, \ldots, a_{r_1}]$$$, the second segment be $$$[a_{l_2}, a_{l_2+ 1}, \ldots, a_{r_2}]$$$, ..., the last segment be $$$[a_{l_k}, a_{l_k+ 1}, \ldots, a_{r_k}]$$$. Since every element should belong to exactly one array, $$$l_1 = 1$$$, $$$r_k = n$$$, and $$$r_i + 1 = l_{i+1}$$$ for each $$$i$$$ from $$$1$$$ to $$$k-1$$$. The split should meet the following condition: $$$f([a_{l_1}, a_{l_1 + 1}, \ldots, a_{r_1}]) \le f([a_{l_2}, a_{l_2+ 1}, \ldots, a_{r_2}]) \le \dots \le f([a_{l_k}, a_{l_k+1}, \ldots, a_{r_k}])$$$, where $$$f(a)$$$ is the bitwise OR of all elements of the array $$$a$$$.
Calculate the number of ways to split the array, and print it modulo $$$998\,244\,353$$$. Two ways are considered different if the sequences $$$[l_1, r_1, l_2, r_2, \ldots, l_k, r_k]$$$ denoting the splits are different.
The first line contains an integer $$$n$$$ ($$$1 \le n \le 2 \cdot 10^5$$$) — the length of the array $$$a$$$.
The second line contains $$$n$$$ integers $$$a_1, a_2, \ldots, a_n$$$ ($$$0 \le a_i \le 10 ^9$$$) — the elements of the given array.
Print one integer — the number of ways to split the array, taken modulo $$$998\,244\,353$$$.
31 2 3
4
51000 1000 1000 1000 1000
16
33 4 6
3
In the first two examples, every way to split the array is valid.
In the third example, there are three valid ways to split the array:
If you split the array into two arrays $$$[3, 4]$$$ and $$$[6]$$$, the bitwise OR of the first array is $$$7$$$, and the bitwise OR of the second array is $$$6$$$; $$$7 > 6$$$, so this way to split the array is invalid.
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