G1. Yunli's Subarray Queries (easy version)time limit per test3 secondsmemory limit per test512 megabytesinputstandard inputoutputstandard outputThis is the easy version of the problem. In this version, it is guaranteed that $$$r=l+k-1$$$ for all queries.For an arbitrary array $$$b$$$, Yunli can perform the following operation any number of times: Select an index $$$i$$$. Set $$$b_i = x$$$ where $$$x$$$ is any integer she desires ($$$x$$$ is not limited to the interval $$$[1,n]$$$). Denote $$$f(b)$$$ as the minimum number of operations she needs to perform until there exists a consecutive subarray$$$^{\text{∗}}$$$ of length at least $$$k$$$ in $$$b$$$.Yunli is given an array $$$a$$$ of size $$$n$$$ and asks you $$$q$$$ queries. In each query, you must output $$$\sum_{j=l+k-1}^{r} f([a_l, a_{l+1}, \ldots, a_j])$$$. Note that in this version, you are only required to output $$$f([a_l, a_{l+1}, \ldots, a_{l+k-1}])$$$.$$$^{\text{∗}}$$$If there exists a consecutive subarray of length $$$k$$$ that starts at index $$$i$$$ ($$$1 \leq i \leq |b|-k+1$$$), then $$$b_j = b_{j-1} + 1$$$ for all $$$i < j \leq i+k-1$$$.InputThe first line contains $$$t$$$ ($$$1 \leq t \leq 10^4$$$) — the number of test cases.The first line of each test case contains three integers $$$n$$$, $$$k$$$, and $$$q$$$ ($$$1 \leq k \leq n \leq 2 \cdot 10^5$$$, $$$1 \leq q \leq 2 \cdot 10^5$$$) — the length of the array, the length of the consecutive subarray, and the number of queries.The following line contains $$$n$$$ integers $$$a_1, a_2, \dots, a_n$$$ ($$$1 \leq a_i \leq n$$$).The following $$$q$$$ lines contain two integers $$$l$$$ and $$$r$$$ ($$$1 \leq l \leq r \leq n$$$, $$$r=l+k-1$$$) — the bounds of the query.It is guaranteed that the sum of $$$n$$$ over all test cases does not exceed $$$2 \cdot 10^5$$$ and the sum of $$$q$$$ over all test cases does not exceed $$$2 \cdot 10^5$$$.OutputOutput $$$\sum_{j=l+k-1}^{r} f([a_l, a_{l+1}, \ldots, a_j])$$$ for each query on a new line.ExampleInput37 5 31 2 3 2 1 2 31 52 63 78 4 24 3 1 1 2 4 3 23 62 55 4 24 5 1 2 31 42 5Output2
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NoteIn the first query of the first testcase, $$$b=[1,2,3,2,1]$$$. Yunli can make a consecutive subarray of length $$$5$$$ in $$$2$$$ moves: Set $$$b_4=4$$$ Set $$$b_5=5$$$ After operations $$$b=[1, 2, 3, 4, 5]$$$.In the second query of the first testcase, $$$b=[2,3,2,1,2]$$$. Yunli can make a consecutive subarray of length $$$5$$$ in $$$3$$$ moves: Set $$$b_3=0$$$ Set $$$b_2=-1$$$ Set $$$b_1=-2$$$ After operations $$$b=[-2, -1, 0, 1, 2]$$$.