Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[a[i][j] - b[i][j] for j in range(w)] for i in range(h)]

dp = [[set() for _ in range(w)] for _ in range(h)]
dp[0][0].add(c[0][0])

for i in range(h):
    for j in range(w):
        for x in dp[i][j]:
            if i < h - 1:
                dp[i + 1][j].add(abs(x + c[i + 1][j]))
                dp[i + 1][j].add(abs(x - c[i + 1][j]))

            if j < w - 1:
                dp[i][j + 1].add(abs(x + c[i][j + 1]))
                dp[i][j + 1].add(abs(x - c[i][j + 1]))

print(min(dp[h - 1][w - 1]))


Fixed submission:
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[abs(a[i][j] - b[i][j]) for j in range(w)] for i in range(h)]

CONST = 80 * 80 * 2
dp = [[0] * w for _ in range(h)]
dp[0][0] = 1 << (c[0][0] + CONST)

for i in range(h):
    for j in range(w):
        if i < h - 1:
            dp[i + 1][j] |= (dp[i][j] << c[i + 1][j])
            dp[i + 1][j] |= (dp[i][j] >> c[i + 1][j])
        if j < w - 1:
            dp[i][j + 1] |= (dp[i][j] << c[i][j + 1])
            dp[i][j + 1] |= (dp[i][j] >> c[i][j + 1])

for k in range(CONST):
    if dp[h - 1][w - 1] & (1 << (CONST + k)) != 0 or dp[h - 1][w - 1] & (
            1 << (CONST - k)) != 0:
        ans = k
        break

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[a[i][j] - b[i][j] for j in range(w)] for i in range(h)]

MAX_K = 80 * (h + w) + 5
dp = [[[False] * (MAX_K + 80) for _ in range(w)] for _ in range(h)]
dp[0][0][abs(c[0][0])] = True

for i in range(h):
    for j in range(w):
        for k in range(MAX_K):
            if dp[i][j][k]:
                if i < h - 1:
                    dp[i + 1][j][abs(k + c[i + 1][j])] = True
                    dp[i + 1][j][abs(k - c[i + 1][j])] = True

                if j < w - 1:
                    dp[i][j + 1][abs(k + c[i][j + 1])] = True
                    dp[i][j + 1][abs(k - c[i][j + 1])] = True

for k in range(MAX_K):
    if dp[h - 1][w - 1][k]:
        ans = k
        break
print(ans)


Fixed submission:
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[abs(a[i][j] - b[i][j]) for j in range(w)] for i in range(h)]

CONST = 80 * 80 * 2
dp = [[0] * w for _ in range(h)]
dp[0][0] = 1 << (c[0][0] + CONST)

for i in range(h):
    for j in range(w):
        if i < h - 1:
            dp[i + 1][j] |= (dp[i][j] << c[i + 1][j])
            dp[i + 1][j] |= (dp[i][j] >> c[i + 1][j])
        if j < w - 1:
            dp[i][j + 1] |= (dp[i][j] << c[i][j + 1])
            dp[i][j + 1] |= (dp[i][j] >> c[i][j + 1])

for k in range(CONST):
    if dp[h - 1][w - 1] & (1 << (CONST + k)) != 0 or dp[h - 1][w - 1] & (
            1 << (CONST - k)) != 0:
        ans = k
        break

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[a[i][j] - b[i][j] for j in range(w)] for i in range(h)]

MAX_K = 12805
dp = [[[False] * (MAX_K + 80) for _ in range(w)] for _ in range(h)]
dp[0][0][abs(c[0][0])] = True

for i in range(h):
    for j in range(w):
        for k in range(MAX_K):
            if dp[i][j][k]:
                if i < h - 1:
                    dp[i + 1][j][abs(k + c[i + 1][j])] = True
                    dp[i + 1][j][abs(k - c[i + 1][j])] = True

                if j < w - 1:
                    dp[i][j + 1][abs(k + c[i][j + 1])] = True
                    dp[i][j + 1][abs(k - c[i][j + 1])] = True

for k in range(MAX_K):
    if dp[h - 1][w - 1][k]:
        ans = k
        break
print(ans)


Fixed submission:
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[abs(a[i][j] - b[i][j]) for j in range(w)] for i in range(h)]

CONST = 80 * 80 * 2
dp = [[0] * w for _ in range(h)]
dp[0][0] = 1 << (c[0][0] + CONST)

for i in range(h):
    for j in range(w):
        if i < h - 1:
            dp[i + 1][j] |= (dp[i][j] << c[i + 1][j])
            dp[i + 1][j] |= (dp[i][j] >> c[i + 1][j])
        if j < w - 1:
            dp[i][j + 1] |= (dp[i][j] << c[i][j + 1])
            dp[i][j + 1] |= (dp[i][j] >> c[i][j + 1])

for k in range(CONST):
    if dp[h - 1][w - 1] & (1 << (CONST + k)) != 0 or dp[h - 1][w - 1] & (
            1 << (CONST - k)) != 0:
        ans = k
        break

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[a[i][j] - b[i][j] for j in range(w)] for i in range(h)]

dp = [[set() for _ in range(w)] for _ in range(h)]
dp[0][0].add(c[0][0])

for i in range(h):
    for j in range(w):
        for x in dp[i][j]:
            if i < h - 1:
                dp[i + 1][j].add(abs(x + c[i + 1][j]))
                dp[i + 1][j].add(abs(x - c[i + 1][j]))

            if j < w - 1:
                dp[i][j + 1].add(abs(x + c[i][j + 1]))
                dp[i][j + 1].add(abs(x - c[i][j + 1]))

print(min(dp[h - 1][w - 1]))


Fixed submission:
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[abs(a[i][j] - b[i][j]) for j in range(w)] for i in range(h)]

CONST = 80 * 80 * 2
dp = [[0] * w for _ in range(h)]
dp[0][0] = 1 << (c[0][0] + CONST)

for i in range(h):
    for j in range(w):
        if i < h - 1:
            dp[i + 1][j] |= (dp[i][j] << c[i + 1][j])
            dp[i + 1][j] |= (dp[i][j] >> c[i + 1][j])
        if j < w - 1:
            dp[i][j + 1] |= (dp[i][j] << c[i][j + 1])
            dp[i][j + 1] |= (dp[i][j] >> c[i][j + 1])

for k in range(CONST):
    if dp[h - 1][w - 1] & (1 << (CONST + k)) != 0 or dp[h - 1][w - 1] & (
            1 << (CONST - k)) != 0:
        ans = k
        break

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[a[i][j] - b[i][j] for j in range(w)] for i in range(h)]

dp = [[set() for _ in range(w)] for _ in range(h)]
dp[0][0].add(c[0][0])

for i in range(h):
    for j in range(w):
        for x in dp[i][j]:
            if i < h - 1:
                dp[i + 1][j].add(abs(x + c[i + 1][j]))
                dp[i + 1][j].add(abs(x - c[i + 1][j]))

            if j < w - 1:
                dp[i][j + 1].add(abs(x + c[i][j + 1]))
                dp[i][j + 1].add(abs(x - c[i][j + 1]))

print(min(dp[h - 1][w - 1]))


Fixed submission:
import sys
input = sys.stdin.readline

h, w = map(int, input().split())
a = [tuple(map(int, input().split())) for _ in range(h)]
b = [tuple(map(int, input().split())) for _ in range(h)]
c = [[abs(a[i][j] - b[i][j]) for j in range(w)] for i in range(h)]

CONST = 80 * 80 * 2
dp = [[0] * w for _ in range(h)]
dp[0][0] = 1 << (c[0][0] + CONST)

for i in range(h):
    for j in range(w):
        if i < h - 1:
            dp[i + 1][j] |= (dp[i][j] << c[i + 1][j])
            dp[i + 1][j] |= (dp[i][j] >> c[i + 1][j])
        if j < w - 1:
            dp[i][j + 1] |= (dp[i][j] << c[i][j + 1])
            dp[i][j + 1] |= (dp[i][j] >> c[i][j + 1])

for k in range(CONST):
    if dp[h - 1][w - 1] & (1 << (CONST + k)) != 0 or dp[h - 1][w - 1] & (
            1 << (CONST - k)) != 0:
        ans = k
        break

print(ans)