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 Pascal (FPC 2.6.2) (judge verdict: Time Limit Exceeded)

var
    h,w,d,q,i,j,k,tmp,ans_cnt: Longint;
    a:array[1..300,1..300] of Longint;
    index:array[1..90000,1..2] of Longint;
    l,r: Longint;
    ans:array[1..100000,1..3] of Longint;
    flag:Boolean;
begin
    readln(h,w,d);
    for i := 1 to h do
    begin
        for j := 1 to w do
        begin
            read(a[i][j]);
            index[a[i][j]][1]:=i;
            index[a[i][j]][2]:=j;
        end;
    end;
    read(q);
    for i := 1 to q do
    begin
        readln(l,r);
        flag:=false;
        for j := 1 to ans_cnt do
        begin
            if (ans[j][1]=l) and (ans[j][2]=r) then
            begin
                writeln(ans[j][3]);
                flag:=true;
                break;
            end;
        end;
        if flag then
        begin
            continue;
        end;
        tmp:=0;
        k:=l;
        while k<>r do
        begin
            j:=k;
            inc(k,d);
            inc(tmp,abs(index[k][1]-index[j][1])+abs(index[k][2]-index[j][2]));
        end;
        inc(ans_cnt);
        ans[ans_cnt][1]:=l;
        ans[ans_cnt][2]:=r;
        ans[ans_cnt][3]:=tmp;
        writeln(tmp);
    end;
end.