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 C# (Mono 4.6.2.0) (judge verdict: Time Limit Exceeded)

using System;
using System.Linq;

namespace abc089_d
{
	class Program
	{
		static void Main(string[] args)
		{
			int[] x = Console.ReadLine().Split().Select(int.Parse).ToArray();
			int[,] board = new int[x[0], x[1]];
			for (int i = 0; i < x[0]; i++)
			{
				int[] a = Console.ReadLine().Split().Select(int.Parse).ToArray();
				for (int j = 0; j < x[1]; j++)
				{
					board[i, j] = a[j];
				}
			}
			int[] sum = new int[x[0] * x[1] + 1];
			for (int i = x[2] + 1; i <= x[0] * x[1]; i++)//search num
			{
				int[] start = new int[2]; int[] goal = new int[2];
				for (int j = 0; j < x[0]; j++)
				{
					for (int k = 0; k < x[1]; k++)
					{
						if (board[j, k] == i - x[2]) { start[0] = j; start[1] = k; }
						if (board[j, k] == i) { goal[0] = j; goal[1] = k; }
					}
				}
				sum[i] = sum[i - x[2]] +
					Math.Abs(start[0] - goal[0]) +
					Math.Abs(start[1] - goal[1]);
			}
			int n = int.Parse(Console.ReadLine());
			for (int i = 0; i < n; i++)
			{
				int[] a = Console.ReadLine().Split().Select(int.Parse).ToArray();
				Console.WriteLine(sum[a[1]] - sum[a[0]]);
			}
		}
	}
}