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CF1609A.Divide and Multiply
Divide and Multiply

William has array of numbers . He can perform the following sequence of operations any number of times:
- Pick any two items from array and , where must be a multiple of
Help William find the maximal sum of array elements, which he can get by performing the sequence of operations described above.
Input
Each test contains multiple test cases. The first line contains the number of test cases (). Description of the test cases follows.
The first line of each test case contains an integer , the number of elements in William's array.
The second line contains integers , the contents of William's array.
Output
For each test case output the maximal sum of array elements after performing an optimal sequence of operations.
Note
In the first example test case the optimal sequence would be:
- Pick and . After performing a sequence of operations and , making the array look as: [12, 2, 2].
- Pick and . After performing a sequence of operations and , making the array look as: [24, 1, 2].
- Pick and . After performing a sequence of operations and , making the array look as: [48, 1, 1].
The final answer .
In the third example test case there is no way to change the sum of elements, so the answer is .
Samples
5
3
6 4 2
5
1 2 3 4 5
1
10
3
2 3 4
15
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
50
46
10
26
35184372088846
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