Preparando MOJI
Black is gifted with a Divine array $$$a$$$ consisting of $$$n$$$ ($$$1 \le n \le 2000$$$) integers. Each position in $$$a$$$ has an initial value. After shouting a curse over the array, it becomes angry and starts an unstoppable transformation.
The transformation consists of infinite steps. Array $$$a$$$ changes at the $$$i$$$-th step in the following way: for every position $$$j$$$, $$$a_j$$$ becomes equal to the number of occurrences of $$$a_j$$$ in $$$a$$$ before starting this step.
Here is an example to help you understand the process better:
Initial array: | $$$2$$$ $$$1$$$ $$$1$$$ $$$4$$$ $$$3$$$ $$$1$$$ $$$2$$$ |
After the $$$1$$$-st step: | $$$2$$$ $$$3$$$ $$$3$$$ $$$1$$$ $$$1$$$ $$$3$$$ $$$2$$$ |
After the $$$2$$$-nd step: | $$$2$$$ $$$3$$$ $$$3$$$ $$$2$$$ $$$2$$$ $$$3$$$ $$$2$$$ |
After the $$$3$$$-rd step: | $$$4$$$ $$$3$$$ $$$3$$$ $$$4$$$ $$$4$$$ $$$3$$$ $$$4$$$ |
... | ... |
In the initial array, we had two $$$2$$$-s, three $$$1$$$-s, only one $$$4$$$ and only one $$$3$$$, so after the first step, each element became equal to the number of its occurrences in the initial array: all twos changed to $$$2$$$, all ones changed to $$$3$$$, four changed to $$$1$$$ and three changed to $$$1$$$.
The transformation steps continue forever.
You have to process $$$q$$$ queries: in each query, Black is curious to know the value of $$$a_x$$$ after the $$$k$$$-th step of transformation.
Each test contains multiple test cases. The first line contains the number of test cases $$$t$$$ ($$$1 \le t \le 1000$$$). Description of the test cases follows.
The first line of each test case contains an integer $$$n$$$ ($$$1 \le n \le 2000$$$) — the size of the array $$$a$$$.
The second line of each test case contains $$$n$$$ integers $$$a_1, a_2, \dots, a_n$$$ ($$$1 \le a_i \le n$$$) — the initial values of array $$$a$$$.
The third line of each test case contains a single integer $$$q$$$ ($$$1 \le q \le 100\,000$$$) — the number of queries.
Next $$$q$$$ lines contain the information about queries — one query per line. The $$$i$$$-th line contains two integers $$$x_i$$$ and $$$k_i$$$ ($$$1 \le x_i \le n$$$; $$$0 \le k_i \le 10^9$$$), meaning that Black is asking for the value of $$$a_{x_i}$$$ after the $$$k_i$$$-th step of transformation. $$$k_i = 0$$$ means that Black is interested in values of the initial array.
It is guaranteed that the sum of $$$n$$$ over all test cases doesn't exceed $$$2000$$$ and the sum of $$$q$$$ over all test cases doesn't exceed $$$100\,000$$$.
For each test case, print $$$q$$$ answers. The $$$i$$$-th of them should be the value of $$$a_{x_i}$$$ after the $$$k_i$$$-th step of transformation. It can be shown that the answer to each query is unique.
2 7 2 1 1 4 3 1 2 4 3 0 1 1 2 2 6 1 2 1 1 2 1 0 2 1000000000
1 2 3 3 1 2
The first test case was described ih the statement. It can be seen that:
For the second test case,
Initial array: | $$$1$$$ $$$1$$$ |
After the $$$1$$$-st step: | $$$2$$$ $$$2$$$ |
After the $$$2$$$-nd step: | $$$2$$$ $$$2$$$ |
... | ... |
It can be seen that: