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CF1516A.Tit for Tat
Tit for Tat
Given an array of length , you can do at most operations of the following type on it:
- choose different elements in the array, add to the first, and subtract from the second. However, all the elements of have to remain non-negative after this operation.
What is lexicographically the smallest array you can obtain?
An array is lexicographically smaller than an array if there exists an index such that , and for all . Less formally, at the first index in which they differ, .
Input
The first line contains an integer () – the number of test cases you need to solve.
The first line of each test case contains integers and (, ) — the number of elements in the array and the maximum number of operations you can make.
The second line contains space-separated integers , , , () — the elements of the array .
Output
For each test case, print the lexicographically smallest array you can obtain after at most operations.
Note
In the second test case, we start by subtracting from the first element and adding to the second. Then, we can't get any lexicographically smaller arrays, because we can't make any of the elements negative.
Samples
2
3 1
3 1 4
2 10
1 0
2 1 5
0 1
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