Buggy python submission (verdict: Runtime Error):
#!/usr/bin/python3
# -*- coding:utf-8 -*-

import numpy
from collections import defaultdict

def main():
  h, w, d = map(int, input().split())
  mat_a = numpy.array([list(map(int, input().split())) for _ in range(h)])
  q = int(input())
  x_to_pos = dict()
  
  for i in range(h):
    for j in range(w):
      x_to_pos[mat_a[i, j]] = (i, j)
      
  def calc_score(p1, p2):
    return sum([abs(x-y) for x, y in zip(p1, p2)])
  
  visited = numpy.zeros((h, w))
  costs = defaultdict(dict)
  for x in range(1, d+1):
    c = x
    cost = 0
    costs[c%d][c%d] = 0
    while True:
      cp = x_to_pos[c]
      c += d
      if c > (h*w):
        break
      np = x_to_pos[c]
      cost += calc_score(cp, np)
      costs[c%d][c] = cost
      
  for _ in range(q):
    cost = 0
    l, r = map(int, input().split())
    print(abs(costs[l%d][l] - costs[l%d][r]))

if __name__=='__main__':
  main()



Fixed submission:
#!/usr/bin/python3
# -*- coding:utf-8 -*-

import numpy
from collections import defaultdict

def main():
  h, w, d = map(int, input().split())
  mat_a = numpy.array([list(map(int, input().split())) for _ in range(h)])
  q = int(input())
  x_to_pos = dict()
  
  for i in range(h):
    for j in range(w):
      x_to_pos[mat_a[i, j]] = (i, j)
      
  def calc_score(p1, p2):
    return sum([abs(x-y) for x, y in zip(p1, p2)])
  
  visited = numpy.zeros((h, w))
  costs = defaultdict(dict)
  for c in range(1, d+1):
    cost = 0
    costs[c%d][c] = 0
    while True:
      cp = x_to_pos[c]
      c += d
      if c > (h*w):
        break
      np = x_to_pos[c]
      cost += calc_score(cp, np)
      costs[c%d][c] = cost
  
  for _ in range(q):
    l, r = map(int, input().split())
    print(abs(costs[l%d][l] - costs[l%d][r]))

if __name__=='__main__':
  main()

Buggy python submission (verdict: Runtime Error):
#!/usr/bin/python3
# -*- coding:utf-8 -*-

import numpy
from collections import defaultdict

def main():
  h, w, d = map(int, input().split())
  mat_a = numpy.array([list(map(int, input().split())) for _ in range(h)])
  q = int(input())
  x_to_pos = dict()
  
  for i in range(h):
    for j in range(w):
      x_to_pos[mat_a[i, j]] = (i, j)
      
  def calc_score(p1, p2):
    return sum([abs(x-y) for x, y in zip(p1, p2)])
  
  visited = numpy.zeros((h, w))
  costs = defaultdict(dict)
  for x in numpy.sort(mat_a.reshape(-1)):
    c = x
    cost = 0
    costs[c%d][c%d] = 0
    if x > d:
      continue
    while True:
      cp = x_to_pos[c]
      c += d
      if c not in x_to_pos.keys():
        break
      np = x_to_pos[c]
      cost += calc_score(cp, np)
      costs[c%d][c] = cost
      
  for _ in range(q):
    cost = 0
    l, r = map(int, input().split())
    if l == r:
      print(0)
    else:
#       print(l, r, l%d, costs)
      print(abs(costs[l%d][l] - costs[l%d][r]))

if __name__=='__main__':
  main()



Fixed submission:
#!/usr/bin/python3
# -*- coding:utf-8 -*-

import numpy
from collections import defaultdict

def main():
  h, w, d = map(int, input().split())
  mat_a = numpy.array([list(map(int, input().split())) for _ in range(h)])
  q = int(input())
  x_to_pos = dict()
  
  for i in range(h):
    for j in range(w):
      x_to_pos[mat_a[i, j]] = (i, j)
      
  def calc_score(p1, p2):
    return sum([abs(x-y) for x, y in zip(p1, p2)])
  
  visited = numpy.zeros((h, w))
  costs = defaultdict(dict)
  for c in range(1, d+1):
    cost = 0
    costs[c%d][c] = 0
    while True:
      cp = x_to_pos[c]
      c += d
      if c > (h*w):
        break
      np = x_to_pos[c]
      cost += calc_score(cp, np)
      costs[c%d][c] = cost
  
  for _ in range(q):
    l, r = map(int, input().split())
    print(abs(costs[l%d][l] - costs[l%d][r]))

if __name__=='__main__':
  main()