Buggy python submission (verdict: Runtime Error):
H,W,D=map(int,input().split());S=H*W;A=[map(int,input().split())for _ in range(H)];Q,*L=open(0);d=[0]*S;e=[0]*S
for i,l in enumerate(A):
 for j,v in enumerate(l):d[v-1]=(i,j)
for i in range(S):
 if i>=D:e[i]=sum(abs(p-q)for p,q in zip(d[i-D],d[i]))+e[i-D]
for i in L:l,r=map(int,i.split());print(e[r-1]-e[l-1])

Fixed submission:
H, W, D = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(H)]
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [None for _ in range(H*W)]
for i, l in enumerate(A) :
    for j, v in enumerate(l) :
        dp[v-1] = (i, j)

def f(p, q) :
    x, y = dp[p]
    i, j = dp[q]
    return abs(x-i)+abs(y-j)

distance = [0 for _ in range(H*W)]
for i in range(H*W) :
    if i<D :
        pass
    else :
        distance[i] = f(i-D, i) + distance[i-D]

for l, r in LR :
    print(distance[r-1]-distance[l-1])

Buggy python submission (verdict: Time Limit Exceeded):
from numpy import *
from functools import lru_cache

H, W, D = map(int, input().split())
A = array([list(map(int, input().split())) for _ in range(H)])
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [0 for _ in range(H*W)]
for i in range(H*W) :
    (h,), (w,) = where(A==i+1)
    dp[i] = (h, w)

def f(p, q) :
    x, y = dp[p]
    i, j = dp[q]
    return abs(x-i)+abs(y-j)

distance = [0 for _ in range(H*W)]
for i in range(H*W) :
    if i<D :
        distance[i] = 0
    else :
        distance[i] = f(i-D, i) + distance[i-D]

for l, r in LR :
    print(distance[r-1]-distance[l-1])

Fixed submission:
H, W, D = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(H)]
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [None for _ in range(H*W)]
for i, l in enumerate(A) :
    for j, v in enumerate(l) :
        dp[v-1] = (i, j)

def f(p, q) :
    x, y = dp[p]
    i, j = dp[q]
    return abs(x-i)+abs(y-j)

distance = [0 for _ in range(H*W)]
for i in range(H*W) :
    if i<D :
        pass
    else :
        distance[i] = f(i-D, i) + distance[i-D]

for l, r in LR :
    print(distance[r-1]-distance[l-1])

Buggy python submission (verdict: Time Limit Exceeded):
from numpy import *
from functools import lru_cache

H, W, D = map(int, input().split())
A = array([list(map(int, input().split())) for _ in range(H)])
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [0 for _ in range(H*W)]
for i in range(H*W) :
    (h,), (w,) = where(A==i+1)
    dp[i] = (h, w)

@lru_cache(H*W)
def f(p, q) :
    x, y = dp[p-1]
    i, j = dp[q-1]
    return abs(x-i)+abs(y-j)

for l, r in LR :
    print(sum([f(p, p+D) for p in range(l, r, D)], dtype=int))

Fixed submission:
H, W, D = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(H)]
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [None for _ in range(H*W)]
for i, l in enumerate(A) :
    for j, v in enumerate(l) :
        dp[v-1] = (i, j)

def f(p, q) :
    x, y = dp[p]
    i, j = dp[q]
    return abs(x-i)+abs(y-j)

distance = [0 for _ in range(H*W)]
for i in range(H*W) :
    if i<D :
        pass
    else :
        distance[i] = f(i-D, i) + distance[i-D]

for l, r in LR :
    print(distance[r-1]-distance[l-1])

Buggy python submission (verdict: Time Limit Exceeded):
H, W, D = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(H)]
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [0 for _ in range(H*W)]
for i in range(H*W) :
    for h, l in enumerate(A) :
        try :
            w = l.index(i+1)
            break
        except ValueError:
            pass
    dp[i] = (h, w)

def f(p, q) :
    x, y = dp[p-1]
    i, j = dp[q-1]
    return abs(x-i)+abs(y-j)

for l, r in LR :
    print(sum(f(p, p+D) for p in range(l, r, D)))

Fixed submission:
H, W, D = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(H)]
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [None for _ in range(H*W)]
for i, l in enumerate(A) :
    for j, v in enumerate(l) :
        dp[v-1] = (i, j)

def f(p, q) :
    x, y = dp[p]
    i, j = dp[q]
    return abs(x-i)+abs(y-j)

distance = [0 for _ in range(H*W)]
for i in range(H*W) :
    if i<D :
        pass
    else :
        distance[i] = f(i-D, i) + distance[i-D]

for l, r in LR :
    print(distance[r-1]-distance[l-1])

Buggy python submission (verdict: Time Limit Exceeded):
from functools import lru_cache
import numpy as np

H, W, D = map(int, input().split())
A = np.array([list(map(int, input().split())) for _ in range(H)])
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

@lru_cache(300**4)
def f(p, q) :
    (x,), (y,) = np.where(A==p)
    (i,), (j,) = np.where(A==q)
    return abs(x-i)+abs(y-j)

for l, r in LR :
    print(sum(f(p, p+D) for p in range(l, r, D)))

Fixed submission:
H, W, D = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(H)]
Q = int(input())
LR = [list(map(int, input().split())) for _ in range(Q)]

dp = [None for _ in range(H*W)]
for i, l in enumerate(A) :
    for j, v in enumerate(l) :
        dp[v-1] = (i, j)

def f(p, q) :
    x, y = dp[p]
    i, j = dp[q]
    return abs(x-i)+abs(y-j)

distance = [0 for _ in range(H*W)]
for i in range(H*W) :
    if i<D :
        pass
    else :
        distance[i] = f(i-D, i) + distance[i-D]

for l, r in LR :
    print(distance[r-1]-distance[l-1])