You are given an array of integers of length . Let
be the lexicographically sorted array of all its non-empty subsequences. A subsequence of the array is an array obtained by removing zero or more elements from the initial array. Notice that some subsequences can be equal and that it holds
.
An array is lexicographically smaller than array
if
where
is the first position at which the arrays differ, or if
is a strict prefix of array
.
Let us define the hash of an array that consists of values as:
where
,
are given integers.
Calculate for a given
.
Input
The first line contains integers
.
The second line contains integers
.
In all test cases, it will hold .
Output
Output lines, the
line containing
.
Scoring
In test cases worth 60% of total points, it will additionally hold .
Sample Input 1
2 3 1 5
1 2
Sample Output 1
1
3
2
Explanation for Sample 1
It holds: ,
,
.
,
,
.
Sample Input 2
3 4 2 3
1 3 1
Sample Output 2
1
1
0
2
Explanation for Sample 2
It holds: ,
,
,
.
,
,
,
.
Sample Input 3
5 6 23 1000
1 2 4 2 3
Sample Output 3
1
25
25
577
274
578
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