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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}

memo = [[None] * (H*W+1) for _ in range(H*W+1)]
for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    memo[i-D][i] = abs(a%W - b % W) + abs(a//W - b//W)

for l,r in LR:
    if l == r:
        print(0)
        continue
    if memo[l][r]:
        print(memo[l][r])
        continue
    t = 0
    now = l
    while now != r:
        t += memo[now][now+D]
        now += D
        memo[l][now] = t
    print(t)

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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}

memo = [0] * (H*W+1)
for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    memo[i] = memo[i-D] + abs(a%W - b % W) + abs(a//W - b//W)

for l,r in LR:
    if l == r:
        print(0)
        continue
    print(memo[r] - memo[l])

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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}
move = [0] * (H*W + 1)

for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    move[i] = abs(a%W - b % W) + abs(a//W - b//W)

memo = [[None] * (H*W+1) for _ in range(H*W+1)]
for l,r in LR:
    if l == r:
        print(0)
        continue
    if memo[l][r]:
        print(memo[l][r])
    else:
        t = sum(move[l+D:r+1:D])
        memo[l][r] = t
        print(t)
    

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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}

memo = [0] * (H*W+1)
for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    memo[i] = memo[i-D] + abs(a%W - b % W) + abs(a//W - b//W)

for l,r in LR:
    if l == r:
        print(0)
        continue
    print(memo[r] - memo[l])

Buggy python submission (verdict: Runtime Error):
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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}
move = [0] * (H*W + 1)

for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    move[i] = abs(a%W - b % W) + abs(a//W - b//W)

memo = [[None] * (H*W) for _ in range(H*W)]
for l,r in LR:
    if l == r:
        print(0)
        continue
    if memo[l][r]:
        print(memo[l][r])
    else:
        t = sum(move[l+D:r+1:D])
        memo[l][r] = t
        print(t)
    

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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}

memo = [0] * (H*W+1)
for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    memo[i] = memo[i-D] + abs(a%W - b % W) + abs(a//W - b//W)

for l,r in LR:
    if l == r:
        print(0)
        continue
    print(memo[r] - memo[l])

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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}
move = [0] * (H*W + 1)

for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    move[i] = abs(a%W - b % W) + abs(a//W - b//W)

for l,r in LR:
    if l == r:
        print(0)
        continue
    print(sum(move[l+D:r+1: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)]

data = {A[i][j]:j + i * W for i in range(H) for j in range(W)}

memo = [0] * (H*W+1)
for i in range(1+D,H*W+1):
    a,b = data[i],data[i-D]
    memo[i] = memo[i-D] + abs(a%W - b % W) + abs(a//W - b//W)

for l,r in LR:
    if l == r:
        print(0)
        continue
    print(memo[r] - memo[l])