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CF1863C.MEX Repetition
MEX Repetition
You are given an array of pairwise distinct integers from to . Consider the following operation:
- consecutively for each from to in this order, replace with .
Here of a collection of integers is defined as the smallest non-negative integer which does not occur in the collection . For example, and .
Print the array after applying such operations.
Input
Each test contains multiple test cases. The first line contains the number of test cases (). The description of the test cases follows.
The first line of each test case contains two integers and (, ).
The second line contains pairwise distinct integers () representing the elements of the array before applying the operations.
It is guaranteed that the sum of over all test cases does not exceed .
Output
For each test case, print all elements of the array after applying operations.
Note
In the first test case, here is the entire process:
- On the first operation, the array changes from to , since .
- On the second operation, the array changes from to , since .
Thus, the array becomes after two operations.
In the second test case, the array changes as follows during one operation: $[{\mkern3mu\underline{\mkern-3mu {\bf 0}\mkern-3mu}\mkern3mu}, 1, 3] \rightarrow [2, {\mkern3mu\underline{\mkern-3mu {\bf 1}\mkern-3mu}\mkern3mu}, 3] \rightarrow [2, 0, {\mkern3mu\underline{\mkern-3mu {\bf 3}\mkern-3mu}\mkern3mu}] \rightarrow [2, 0, 1]$.
In the third test case, the array changes as follows during one operation: $[{\mkern3mu\underline{\mkern-3mu {\bf 0}\mkern-3mu}\mkern3mu}, 2] \rightarrow [1, {\mkern3mu\underline{\mkern-3mu {\bf 2}\mkern-3mu}\mkern3mu}] \rightarrow [1, 0]$. And during the second operation: $[{\mkern3mu\underline{\mkern-3mu {\bf 1}\mkern-3mu}\mkern3mu}, 0] \rightarrow [2, {\mkern3mu\underline{\mkern-3mu {\bf 0}\mkern-3mu}\mkern3mu}] \rightarrow [2, 1]$.
Samples
5
1 2
1
3 1
0 1 3
2 2
0 2
5 5
1 2 3 4 5
10 100
5 3 0 4 2 1 6 9 10 8
1
2 0 1
2 1
2 3 4 5 0
7 5 3 0 4 2 1 6 9 10
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