Buggy python submission (verdict: Time Limit Exceeded):
h,w,d = map(int,input().split())
l = [list(map(int,input().split())) for i in range(h)]
ans = [[0]*(h*w+1) for i in range(d)]
px = [0]*(h*w+1)
py = [0]*(h*w+1)
for i in range(h):
    for j in range(w):
        px[l[i][j]],py[l[i][j]] = i,j  

count =[0]*(h*w+1)
for i in range(d+1,h*w+1):
    count[i] = count[i-d]+abs(px[i]-px[i-d])+abs(py[i]-py[i-d])

n = int(input())
for i in range(n):
    a,b = map(int,input().split())
    print(count[b]-count[a])

Fixed submission:
h,w,d = map(int,input().split())
px = [0]*(h*w+1)
py = [0]*(h*w+1)
for i in range(h):
    l = list(map(int,input().split()))
    for j in range(w):
        px[l[j]],py[l[j]] = i,j  

count =[0]*(h*w+1)
for i in range(d+1,h*w+1):
    count[i] = count[i-d]+abs(px[i]-px[i-d])+abs(py[i]-py[i-d])

n = int(input())
for i in range(n):
    a,b = map(int,input().split())
    print(count[b]-count[a])

Buggy python submission (verdict: Time Limit Exceeded):
h,w,d = map(int,input().split())
l = [list(map(int,input().split())) for i in range(h)]
ans = [[0]*(h*w+1) for i in range(d)]

for i in range(h):
    for j in range(w):
        ans[l[i][j]%d][l[i][j]//d] = (l[i][j],i,j)

count =[0]*(h*w+1)
for i in range(2,len(ans[0])):
    if ans[0][i] == 0:
        break
    count[ans[0][i][0]] = count[ans[0][i-1][0]] + abs(ans[0][i][1]-ans[0][i-1][1])+abs(ans[0][i][2]-ans[0][i-1][2])
for i in range(1,d):
    for j in range(1,len(ans[i])):
        if ans[i][j] == 0:
            break
        count[ans[i][j][0]] = count[ans[i][j-1][0]] + abs(ans[i][j][1]-ans[i][j-1][1])+abs(ans[i][j][2]-ans[i][j-1][2])

n = int(input())
for i in range(n):
    a,b = map(int,input().split())
    print(count[b]-count[a])

Fixed submission:
h,w,d = map(int,input().split())
px = [0]*(h*w+1)
py = [0]*(h*w+1)
for i in range(h):
    l = list(map(int,input().split()))
    for j in range(w):
        px[l[j]],py[l[j]] = i,j  

count =[0]*(h*w+1)
for i in range(d+1,h*w+1):
    count[i] = count[i-d]+abs(px[i]-px[i-d])+abs(py[i]-py[i-d])

n = int(input())
for i in range(n):
    a,b = map(int,input().split())
    print(count[b]-count[a])

Buggy python submission (verdict: Runtime Error):
h,w,d = map(int,input().split())
l = [list(map(int,input().split())) for i in range(h)]
ans = [[0]*(h*w) for i in range(d)]

for i in range(h):
    for j in range(w):
        ans[l[i][j]%d][l[i][j]//d] = (l[i][j],i,j)

count =[0]*(h*w+1)
for i in range(2,len(ans[0])):
    if ans[0][i] == 0:
        break
    count[ans[0][i][0]] = count[ans[0][i-1][0]] + abs(ans[0][i][1]-ans[0][i-1][1])+abs(ans[0][i][2]-ans[0][i-1][2])
for i in range(1,d):
    for j in range(1,len(ans[i])):
        if ans[i][j] == 0:
            break
        count[ans[i][j][0]] = count[ans[i][j-1][0]] + abs(ans[i][j][1]-ans[i][j-1][1])+abs(ans[i][j][2]-ans[i][j-1][2])

n = int(input())
for i in range(n):
    a,b = map(int,input().split())
    print(count[b]-count[a])

Fixed submission:
h,w,d = map(int,input().split())
px = [0]*(h*w+1)
py = [0]*(h*w+1)
for i in range(h):
    l = list(map(int,input().split()))
    for j in range(w):
        px[l[j]],py[l[j]] = i,j  

count =[0]*(h*w+1)
for i in range(d+1,h*w+1):
    count[i] = count[i-d]+abs(px[i]-px[i-d])+abs(py[i]-py[i-d])

n = int(input())
for i in range(n):
    a,b = map(int,input().split())
    print(count[b]-count[a])