Problem:
Score : 400 points

Problem Statement

We have a grid with H rows and W columns. The square at the i-th row and the j-th column will be called Square (i,j).

The integers from 1 through H×W are written throughout the grid, and the integer written in Square (i,j) is A_{i,j}.

You, a magical girl, can teleport a piece placed on Square (i,j) to Square (x,y) by consuming |x-i|+|y-j| magic points.

You now have to take Q practical tests of your ability as a magical girl.

The i-th test will be conducted as follows:

Initially, a piece is placed on the square where the integer L_i is written.

Let x be the integer written in the square occupied by the piece. Repeatedly move the piece to the square where the integer x+D is written, as long as x is not R_i. The test ends when x=R_i.

Here, it is guaranteed that R_i-L_i is a multiple of D.

For each test, find the sum of magic points consumed during that test.

Constraints

1 \leq H,W \leq 300

1 \leq D \leq H×W

1 \leq A_{i,j} \leq H×W

A_{i,j} \neq A_{x,y} ((i,j) \neq (x,y))

1 \leq Q \leq 10^5

1 \leq L_i \leq R_i \leq H×W

(R_i-L_i) is a multiple of D.

Input

Input is given from Standard Input in the following format:

H W D
A_{1,1} A_{1,2} ... A_{1,W}
:
A_{H,1} A_{H,2} ... A_{H,W}
Q
L_1 R_1
:
L_Q R_Q

Output

For each test, print the sum of magic points consumed during that test.

Output should be in the order the tests are conducted.

Sample Input 1

3 3 2
1 4 3
2 5 7
8 9 6
1
4 8

Sample Output 1

5

4 is written in Square (1,2).

6 is written in Square (3,3).

8 is written in Square (3,1).

Thus, the sum of magic points consumed during the first test is (|3-1|+|3-2|)+(|3-3|+|1-3|)=5.

Sample Input 2

4 2 3
3 7
1 4
5 2
6 8
2
2 2
2 2

Sample Output 2

0
0

Note that there may be a test where the piece is not moved at all, and there may be multiple identical tests.

Sample Input 3

5 5 4
13 25 7 15 17
16 22 20 2 9
14 11 12 1 19
10 6 23 8 18
3 21 5 24 4
3
13 13
2 10
13 13

Sample Output 3

0
5
0

Solution in Scala (2.11.7) (judge verdict: Accepted)

import scala.io.{StdIn => in}

object Main extends App {
  val Array(h, w, d) = in.readLine.split(" ").map(_.toInt)
  case class Point(x:Int, y:Int) {
    def -(that: Point): Point = new Point(x - that.x, y - that.y)
    def mDist(): Int = this.x.abs + this.y.abs
  }
  val table = Array.ofDim[Point](h*w+1)
  val grid = Iterator.continually(in.readLine)
    .take(h)
    .map(_.split(" ").map(_.toInt))
    .toArray
  
  for{
    i <- 0 until h
    j <- 0 until w
  } table(grid(i)(j)) = new Point(y = i, x = j)


  val res = Array.ofDim[Int](h*w+1)
  for(i <- 1 to h*w-d) {
    res(i+d) = res(i) + (table(i+d) - table(i)).mDist 
  }

  val out = new java.io.PrintWriter(System.out)
  val q = in.readInt
  Iterator.continually(in.readLine)
    .take(q)
    .map(_.split(" ")map(_.toInt))
    .foreach (e => {
      val l = e(0)
      var r = e(1)
      out.println(res(r) - res(l))
    })
  out.flush
}