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 Java (OpenJDK 1.8.0) (judge verdict: Time Limit Exceeded)


import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
	public static void main(String[] args) throws FileNotFoundException, IOException {
		InputReader in = new InputReader(new BufferedInputStream(System.in));
		PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
		TaskB solver = new TaskB();
//		long t1 = System.currentTimeMillis();
		solver.solve(1, in, out);
		out.flush();
//		long t2 = System.currentTimeMillis();
//		System.err.println(t2 - t1);
		out.close();

	}
}

class Seg implements Comparable<Seg> {
	double a;
	double b;

	public Seg(double a, double b) {
		this.a = a;
		this.b = b;
	}

	public int compareTo(Seg t) {
		return Double.compare(a, t.a);
	}

}

class TaskB {

	int id[];
	int sz[];
	double eps = 1e-10;
	long INF = (long) 1e15;
	int c[][];

	void solve(int testNumber, InputReader in, PrintWriter pw) {
		int h = in.nextInt();
		int w = in.nextInt();
		int d = in.nextInt();
		int pos[][] = new int[h * w + 1][2];
		for (int i = 0; i < h; ++i) {
			for (int j = 0; j < w; ++j) {
				int a = in.nextInt();
				pos[a][0] = i;
				pos[a][1] = j;
			}
		}

		ArrayList<Integer> dist[] = new ArrayList[h * w + 1];
		Arrays.setAll(dist, i -> new ArrayList<>());
		for (int i = 1; i <= h * w; ++i) {
			int j = i;
			int t = i;
			int sum = 0;
			while (j <= h * w) {
				sum += Math.abs(pos[t][0] - pos[j][0]) + Math.abs(pos[t][1] - pos[j][1]);
				dist[i].add(sum);
				t = j;
				j += d;
			}
		}
		int q = in.nextInt();
		for (int i = 0; i < q; ++i) {
			int l = in.nextInt();
			int r = in.nextInt();
			int div = (r - l) / d;
//			System.err.println(dist[l]);
			pw.println(dist[l].get(div));
		}
	}

	boolean inter(long rec1[], long rec2[]) {
		if (rec1[0] < rec2[0]) {
			if (rec2[0] <= rec1[2]) {
				if (rec1[1] < rec2[1]) {
//					System.err.println(rec2[1] + " " + rec1[3]);
					if (rec2[1] <= rec1[3]) {
						return true;
					}
				} else {
					if (rec1[1] <= rec2[3]) {
						return true;
					}
				}
			}
		} else {
			if (rec1[0] <= rec2[2]) {
//				System.err.println("hello");
				if (rec1[1] < rec2[1]) {
					if (rec2[1] <= rec1[3])
						return true;
				} else {
					if (rec1[1] <= rec2[3])
						return true;
				}

			}
		}
		return false;
	}

	long ar(long rec[]) {
		long l = Math.abs(rec[0] - rec[2]) + 1;
		long b = Math.abs(rec[1] - rec[3]) + 1;
		return l * b;

	}

	long pow(int n, int m) {
		if (m == 0)
			return 1;
		long ans = pow(n, m / 2);
		ans = (ans * ans);
		if (m % 2 == 1) {
			ans = (ans * n);
		}
		return ans;
	}

	double pow(double n, int m) {
		if (m == 0)
			return 1;
		double ans = pow(n, m / 2);
		ans = (ans * ans);
		if (m % 2 == 1) {
			ans = (ans * n);
		}
		return ans;
	}
}

class InputReader {
	BufferedReader br;
	StringTokenizer st;

	public InputReader(InputStream in) {
		br = new BufferedReader(new InputStreamReader(in));
		st = null;
	}

	public String next() {
		while (st == null || !st.hasMoreTokens()) {
			try {
				st = new StringTokenizer(br.readLine());
			} catch (IOException e) {
				throw new RuntimeException(e);
			}
		}
		return st.nextToken();
	}

	public int nextInt() {
		return Integer.parseInt(next());
	}

	public long nextLong() {
		return Long.parseLong(next());
	}

	public double nextDouble() {
		return Double.parseDouble(next());
	}
}