Buggy python submission (verdict: Runtime Error):
R, C = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(R)]
B = [list(map(int, input().split())) for _ in range(R)]

dp = [0] * R
dp[0] = s = 1 << 6400

for row_a, row_b in zip(A, B):
    for i, (a, b) in enumerate(zip(row_a, row_b)):
        d = abs(a - b)
        if i > 0:
            dp[i] |= dp[i - 1]
        dp[i] = (dp[i] << d) | (dp[i] >> d)

g = dp[-1]
for i in range(6401):
    if g & (s << i) or g & (s >> i):
        print(i)
        quit()

Fixed submission:
R, C = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(R)]
B = [list(map(int, input().split())) for _ in range(R)]

dp = [0] * C
dp[0] = s = 1 << 6400

for row_a, row_b in zip(A, B):
    for i, (a, b) in enumerate(zip(row_a, row_b)):
        d = abs(a - b)
        if i > 0:
            dp[i] |= dp[i - 1]
        dp[i] = (dp[i] << d) | (dp[i] >> d)

g = dp[-1]
for i in range(6401):
    if g & (s << i) or g & (s >> i):
        print(i)
        quit()

Buggy python submission (verdict: Runtime Error):
R, C = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(R)]
B = [list(map(int, input().split())) for _ in range(R)]

dp = [0] * R
dp[0] = s = 1 << 6400

for row_a, row_b in zip(A, B):
    for i, (a, b) in enumerate(zip(row_a, row_b)):
        d = abs(a - b)
        if i > 0:
            dp[i] |= dp[i - 1]
        dp[i] <<= d
        dp[i] >>= d

g = dp[-1]
for i in range(6401):
    if g & (s << i) or g & (s >> i):
        print(i)
        quit()

Fixed submission:
R, C = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(R)]
B = [list(map(int, input().split())) for _ in range(R)]

dp = [0] * C
dp[0] = s = 1 << 6400

for row_a, row_b in zip(A, B):
    for i, (a, b) in enumerate(zip(row_a, row_b)):
        d = abs(a - b)
        if i > 0:
            dp[i] |= dp[i - 1]
        dp[i] = (dp[i] << d) | (dp[i] >> d)

g = dp[-1]
for i in range(6401):
    if g & (s << i) or g & (s >> i):
        print(i)
        quit()

Buggy python submission (verdict: Runtime Error):
r, c = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(r)]
B = [list(map(int, input().split())) for _ in range(r)]

dp_table = [[[False] * 6400 for _2 in range(c)] for _1 in range(r)]

dp_table[0][0][abs(A[0][0] - B[0][0])] = True

for i in range(1, r):
    temp = A[i][0] - B[i][0]
    up_list = dp_table[i - 1][0]
    for idx, up in enumerate(up_list):
        if up:
            dp_table[i][0][abs(idx + temp)] = True
            dp_table[i][0][abs(idx - temp)] = True

for j in range(1, c):
    temp = A[0][j] - B[0][j]
    left_list = dp_table[0][j]
    for idx, left in enumerate(left_list):
        if left:
            dp_table[0][j][abs(idx + temp)] = True
            dp_table[0][j][abs(idx - temp)] = True

for i in range(1, r):
    for j in range(1, c):
        temp = A[i][j] - B[i][j]
        up_list = dp_table[i - 1][j]
        for idx, up in enumerate(up_list):
            if up:
                dp_table[i][j][abs(idx + temp)] = True
                dp_table[i][j][abs(idx - temp)] = True
        left_list = dp_table[i][j - 1]
        for idx, left in enumerate(left_list):
            if left:
                dp_table[i][j][abs(idx + temp)] = True
                dp_table[i][j][abs(idx - temp)] = True

print(dp_table[r - 1][c - 1].index(True))

Fixed submission:
R, C = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(R)]
B = [list(map(int, input().split())) for _ in range(R)]

dp = [0] * C
dp[0] = s = 1 << 6400

for row_a, row_b in zip(A, B):
    for i, (a, b) in enumerate(zip(row_a, row_b)):
        d = abs(a - b)
        if i > 0:
            dp[i] |= dp[i - 1]
        dp[i] = (dp[i] << d) | (dp[i] >> d)

g = dp[-1]
for i in range(6401):
    if g & (s << i) or g & (s >> i):
        print(i)
        quit()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque
from copy import copy

row, column = map(int, input().split())
map1 = [list(map(int, input().split())) for _ in range(row)]
map2 = [list(map(int, input().split())) for _ in range(row)]
map_ = [[n1 - n2 for n1, n2 in zip(row1, row2)] for row1, row2 in zip(map1, map2)]

n = map_[0][0]
queue = deque([(0, 0, n), (0, 0, -n)])
ansque = deque()

def bfs(queue):
    while True:
        nextqueue = deque()
        while queue:
            posr, posc, n = queue.popleft()
            if (posr, posc) == (row - 1, column - 1):
                ansque.append(abs(n))
            for dr, dc in zip([1, 0], [0, 1]):
                nextr = posr + dr
                nextc = posc + dc
                if 0 <= nextr < row and 0 <= nextc < column:
                    nextn = map_[nextr][nextc]
                    nextqueue.append((nextr, nextc, n + nextn))
                    nextqueue.append((nextr, nextc, n - nextn))
        if nextqueue:
            queue = copy(nextqueue)
        else:
            return ansque

print(min(bfs(queue)))


Fixed submission:
R, C = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(R)]
B = [list(map(int, input().split())) for _ in range(R)]

dp = [0] * C
dp[0] = s = 1 << 6400

for row_a, row_b in zip(A, B):
    for i, (a, b) in enumerate(zip(row_a, row_b)):
        d = abs(a - b)
        if i > 0:
            dp[i] |= dp[i - 1]
        dp[i] = (dp[i] << d) | (dp[i] >> d)

g = dp[-1]
for i in range(6401):
    if g & (s << i) or g & (s >> i):
        print(i)
        quit()

Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque
from copy import copy

row, column = map(int, input().split())
map1 = [list(map(int, input().split())) for _ in range(row)]
map2 = [list(map(int, input().split())) for _ in range(row)]

n1 = map1[0][0]
n2 = map2[0][0]
queue = deque([(0, 0, n1, n2), (0, 0, n2, n1)])
ansque = deque()

def bfs(queue):
    while True:
        nextqueue = deque()
        while queue:
            posr, posc, red, blue = queue.popleft()
            if (posr, posc) == (row - 1, column - 1):
                ansque.append(abs(red - blue))
            for dr, dc in zip([1, 0], [0, 1]):
                nextr = posr + dr
                nextc = posc + dc
                if 0 <= nextr < row and 0 <= nextc < column:
                    n1 = map1[nextr][nextc]
                    n2 = map2[nextr][nextc]
                    nextqueue.append((nextr, nextc, red + n1, blue + n2))
                    nextqueue.append((nextr, nextc, red + n2, blue + n1))
        if nextqueue:
            queue = copy(nextqueue)
        else:
            return ansque

print(min(bfs(queue)))

Fixed submission:
R, C = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(R)]
B = [list(map(int, input().split())) for _ in range(R)]

dp = [0] * C
dp[0] = s = 1 << 6400

for row_a, row_b in zip(A, B):
    for i, (a, b) in enumerate(zip(row_a, row_b)):
        d = abs(a - b)
        if i > 0:
            dp[i] |= dp[i - 1]
        dp[i] = (dp[i] << d) | (dp[i] >> d)

g = dp[-1]
for i in range(6401):
    if g & (s << i) or g & (s >> i):
        print(i)
        quit()