Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
dp = [[set() for _ in range(W)] for _ in range(H)]
dp[0][0].add(D[0][0])
for h in range(H):
    for w in range(W):
        if 0 < h:
            for v in dp[h-1][w]:
                v1 = v+D[h][w]
                v2 = v-D[h][w] if v>=D[h][w] else -v+D[h][w]
                dp[h][w].add(v1)
                dp[h][w].add(v2)
        if 0 < w:
            for v in dp[h][w-1]:
                v1 = v+D[h][w]
                v2 = v-D[h][w] if v>=D[h][w] else -v+D[h][w]
                dp[h][w].add(v1)
                dp[h][w].add(v2)
                
ans = min(dp[H-1][W-1])
print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
dp = [[{} for _ in range(W)] for _ in range(H)]
dp[0][0][D[0][0]] = 0
for h in range(H):
    for w in range(W):
        if 0 < h:
            for v in dp[h-1][w]:
                v1 = v+D[h][w]
                v2 = v-D[h][w] if v>=D[h][w] else -v+D[h][w]
                dp[h][w][v1] = 0
                dp[h][w][v2] = 0
        if 0 < w:
            for v in dp[h][w-1]:
                v1 = v+D[h][w]
                v2 = v-D[h][w] if v>=D[h][w] else -v+D[h][w]
                dp[h][w][v1] = 0
                dp[h][w][v2] = 0
                
ans = min(dp[H-1][W-1])
print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
dp = [[{} for _ in range(W)] for _ in range(H)]
dp[0][0][D[0][0]] = 0
for h in range(H):
    for w in range(W):
        for v in dp[h][w]:
            if w != W-1:
                v1 = v+D[h][w+1]
                v2 = v-D[h][w+1]
                if v1<0:
                    v1 *= -1
                if v2<0:
                    v2 *= -1
                dp[h][w+1][v1] = 0
                dp[h][w+1][v2] = 0
            if h != H-1:
                v1 = v+D[h+1][w]
                v2 = v-D[h+1][w]
                if v1<0:
                    v1 *= -1
                if v2<0:
                    v2 *= -1
                dp[h+1][w][v1] = 0
                dp[h+1][w][v2] = 0
ans = min(dp[H-1][W-1])
print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
def solve():
    H,W = map(int,input().split())
    A = [list(map(int,input().split())) for _ in range(H)]
    B = [list(map(int,input().split())) for _ in range(H)]
    D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
    dp = [[{} for _ in range(W)] for _ in range(H)]
    dp[0][0][D[0][0]] = 0
    for h in range(H):
        for w in range(W):
            for v in dp[h][w]:
                if w != W-1:
                    v1 = v+D[h][w+1]
                    v2 = v-D[h][w+1]
                    if v1<0:
                        v1 *= -1
                    if v2<0:
                        v2 *= -1
                    dp[h][w+1][v1] = 0
                    dp[h][w+1][v2] = 0
                if h != H-1:
                    v1 = v+D[h+1][w]
                    v2 = v-D[h+1][w]
                    if v1<0:
                        v1 *= -1
                    if v2<0:
                        v2 *= -1
                    dp[h+1][w][v1] = 0
                    dp[h+1][w][v2] = 0
    ans = min(dp[H-1][W-1])
    return ans
print(solve())

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
dp = [[{} for _ in range(W)] for _ in range(H)]
dp[0][0][D[0][0]] = 0
for h in range(H):
    for w in range(W):
        for v in dp[h][w]:
            if w != W-1:
                v1 = v+D[h][w+1]
                v2 = v-D[h][w+1]
                if v1<0:
                    v1 *= -1
                if v2<0:
                    v2 *= -1
                dp[h][w+1][v1] = 0
                dp[h][w+1][v2] = 0
            if h != H-1:
                v1 = v+D[h+1][w]
                v2 = v-D[h+1][w]
                if v1<0:
                    v1 *= -1
                if v2<0:
                    v2 *= -1
                dp[h+1][w][v1] = 0
                dp[h+1][w][v2] = 0
ans = min(dp[H-1][W-1])
print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
dp = [[{} for _ in range(W)] for _ in range(H)]
dp[0][0][abs(A[0][0]-B[0][0])] = 0
for h in range(H):
    for w in range(W):
        for v in dp[h][w]:
            if w != W-1:
                v1 = v+A[h][w+1]-B[h][w+1]
                v2 = v-A[h][w+1]+B[h][w+1]
                if v1<0:
                    v1 *= -1
                if v2<0:
                    v2 *= -1
                dp[h][w+1][v1] = 0
                dp[h][w+1][v2] = 0
            if h != H-1:
                v1 = v+A[h+1][w]-B[h+1][w]
                v2 = v-A[h+1][w]+B[h+1][w]
                if v1<0:
                    v1 *= -1
                if v2<0:
                    v2 *= -1
                dp[h+1][w][v1] = 0
                dp[h+1][w][v2] = 0
ans = min(dp[H-1][W-1])
print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
dp = [[{} for _ in range(W)] for _ in range(H)]
dp[0][0][abs(A[0][0]-B[0][0])] = 0
for h in range(H):
    for w in range(W):
        for v in dp[h][w]:
            if w != W-1:
                dp[h][w+1][abs(v+A[h][w+1]-B[h][w+1])] = 0
                dp[h][w+1][abs(v-A[h][w+1]+B[h][w+1])] = 0
            if h != H-1:
                dp[h+1][w][abs(v+A[h+1][w]-B[h+1][w])] = 0
                dp[h+1][w][abs(v-A[h+1][w]+B[h+1][w])] = 0
ans = min(dp[H-1][W-1])
print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
dp = [[{} for _ in range(W)] for _ in range(H)]
dp[0][0][abs(A[0][0]-B[0][0])] = 0
for h in range(H-1):
    for w in range(W-1):
        for v in dp[h][w]:
            dp[h][w+1][abs(v+A[h][w+1]-B[h][w+1])] = 0
            dp[h][w+1][abs(v-A[h][w+1]+B[h][w+1])] = 0
            dp[h+1][w][abs(v+A[h+1][w]-B[h+1][w])] = 0
            dp[h+1][w][abs(v-A[h+1][w]+B[h+1][w])] = 0
for v in dp[H-1][W-2]:
    dp[H-1][W-1][abs(v+A[H-1][W-1]-B[H-1][W-1])] = 0
    dp[H-1][W-1][abs(v-A[H-1][W-1]+B[H-1][W-1])] = 0
for v in dp[H-2][W-1]:
    dp[H-1][W-1][abs(v+A[H-1][W-1]-B[H-1][W-1])] = 0
    dp[H-1][W-1][abs(v-A[H-1][W-1]+B[H-1][W-1])] = 0
ans = min(dp[H-1][W-1])
print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Runtime Error):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
M = 0
for h in range(H):
    for w in range(W):
        M = max(abs(A[h][w]-B[h][w]),M)
M *= H+W
dp = [[[False]*M for _ in range(W)] for _ in range(H)]

dp[0][0][abs(A[0][0]-B[0][0])] = True
for h in range(H-1):
    for w in range(W-1):
        v1 = abs(A[h+1][w]-B[h+1][w])
        v2 = abs(A[h][w+1]-B[h][w+1])
        for v in range(M):
            if dp[h][w][v]:
                dp[h+1][w][v1+v] = True
                dp[h+1][w][abs(v1-v)] = True
                dp[h][w+1][v2+v] = True
                dp[h][w+1][abs(v2-v)] = True

v0 = abs(A[H-1][W-1]-B[H-1][W-1])
for v in range(M):
    if dp[H-1][W-2][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True
    if dp[H-2][W-1][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True

for v in range(M):
    if dp[H-1][W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Runtime Error):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
M = 0
for h in range(H):
    for w in range(W):
        M += abs(A[h][w]-B[h][w])
dp = [[[False]*M for _ in range(W)] for _ in range(H)]

dp[0][0][abs(A[0][0]-B[0][0])] = True
for h in range(H-1):
    for w in range(W-1):
        v1 = abs(A[h+1][w]-B[h+1][w])
        v2 = abs(A[h][w+1]-B[h][w+1])
        for v in range(M):
            if dp[h][w][v]:
                dp[h+1][w][v1+v] = True
                dp[h+1][w][abs(v1-v)] = True
                dp[h][w+1][v2+v] = True
                dp[h][w+1][abs(v2-v)] = True

v0 = abs(A[H-1][W-1]-B[H-1][W-1])
for v in range(M):
    if dp[H-1][W-2][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True
    if dp[H-2][W-1][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True

for v in range(M):
    if dp[H-1][W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
dp1 = [[False]*((H+W)*80) for _ in range(W)]
dp2 = [[False]*((H+W)*80) for _ in range(W)]
for w in range(W):
    dp1[w][0] = True

for h in range(H):
    for w in range(W):
        va = A[h][w]
        vb = B[h][w]
        for v in range((H+W)*80):
            if dp1[w][v]:
                dp2[w][abs(v+va-vb)] = True
                dp2[w][abs(v-va+vb)] = True
        if w!=0:
            for v in range((H+W)*80):
                if dp2[w-1][v]:
                    dp2[w][abs(v+va-vb)] = True
                    dp2[w][abs(v-va+vb)] = True
    dp1 = dp2
    dp2 = [[False]*((H+W)*80) for _ in range(W)]

for v in range((H+W)*80):
    if dp1[W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
dp1 = [[False]*((H+W)*80) for _ in range(W)]
dp2 = [[False]*((H+W)*80) for _ in range(W)]
for w in range(W):
    dp1[w][0] = True

for h in range(H):
    for w in range(W):
        va = A[h][w]
        vb = B[h][w]
        for v in range((H+W)*80):
            if dp1[w][v]:
                dp2[w][abs(v+va-vb)] = True
                dp2[w][abs(v-va+vb)] = True
        if w!=0:
            for v in range((H+W)*80):
                if dp2[w-1][v]:
                    dp2[w][abs(v+va-vb)] = True
                    dp2[w][abs(v-va+vb)] = True
    dp1 = dp2
    dp2 = [[False]*((H+W)*80) for _ in range(W)]

for v in range((H+W)*80):
    if dp1[W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Runtime Error):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
dp1 = [[False]*((H+W)*80) for _ in range(W)]
dp2 = [[False]*((H+W)*80) for _ in range(W)]
for w in range(W):
    dp1[w][0] = True

for h in range(H):
    for w in range(W):
        va = A[h][w]
        vb = B[h][w]
        for v in range((H+W)*80):
            if dp1[w][v]:
                dp2[w][abs(v+va-vb)] = True
                dp2[w][abs(v-va+vb)] = True
        if w!=0:
            for v in range((H+W)*80):
                if dp2[w-1][v]:
                    dp2[w][abs(v+va-vb)] = True
                    dp2[w][abs(v-va+vb)] = True
    dp1 = dp2.copy()
    dp2 = [[False]*((H+W)*80) for _ in range(W)]

for v in range((H+W)*80):
    if dp1[W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
dp = [[[False]*((H+W)*80) for _ in range(W)] for _ in range(H)]

dp[0][0][abs(A[0][0]-B[0][0])] = True
for h in range(H-1):
    for w in range(W-1):
        v1 = abs(A[h+1][w]-B[h+1][w])
        v2 = abs(A[h][w+1]-B[h][w+1])
        for v in range((H+W)*80):
            if dp[h][w][v]:
                dp[h+1][w][v1+v] = True
                dp[h+1][w][abs(v1-v)] = True
                dp[h][w+1][v2+v] = True
                dp[h][w+1][abs(v2-v)] = True

v0 = abs(A[H-1][W-1]-B[H-1][W-1])
for v in range((H+W)*80):
    if dp[H-1][W-2][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True
    if dp[H-2][W-1][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True

for v in range((H+W)*80):
    if dp[H-1][W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
dp = [[[False]*((H+W)*80) for _ in range(W)] for _ in range(H)]

dp[0][0][abs(A[0][0]-B[0][0])] = True
for h in range(H-1):
    for w in range(W-1):
        for v in range((H+W)*80):
            v1 = abs(A[h+1][w]-B[h+1][w])
            v2 = abs(A[h][w+1]-B[h][w+1])
            if dp[h][w][v]:
                dp[h+1][w][v1+v] = True
                dp[h+1][w][abs(v1-v)] = True
                dp[h][w+1][v2+v] = True
                dp[h][w+1][abs(v2-v)] = True

v0 = abs(A[H-1][W-1]-B[H-1][W-1])
for v in range((H+W)*80):
    if dp[H-1][W-2][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True
    if dp[H-2][W-1][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True

for v in range((H+W)*80):
    if dp[H-1][W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)

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

dp = [[[False]*((H+W)*80) for _ in range(W)] for _ in range(H)]

dp[0][0][abs(A[0][0]-B[0][0])] = True
for h in range(H-1):
    for w in range(W-1):
        for v in range((H+W)*80):
            v1 = abs(A[h+1][w]-B[h+1][w])
            v2 = abs(A[h][w+1]-B[h][w+1])
            if dp[h][w][v]:
                dp[h+1][w][v1+v] = True
                dp[h+1][w][abs(v1-v)] = True
                dp[h][w+1][v2+v] = True
                dp[h][w+1][abs(v2-v)] = True

v0 = abs(A[H-1][W-1]-B[H-1][W-1])
for v in range((H+W)*80):
    if dp[H-1][W-2][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True
    if dp[H-2][W-1][v]:
        dp[H-1][W-1][v0+v] = True
        dp[H-1][W-1][abs(v0-v)] = True

for v in range((H+W)*80):
    if dp[H-1][W-1][v]:
        ans = v
        break

print(ans)

Fixed submission:
H,W = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(H)]
B = [list(map(int,input().split())) for _ in range(H)]
D = [[abs(A[h][w]-B[h][w]) for w in range(W)] for h in range(H)]
def cal():
    dp1 = [set() for _ in range(W)]
    dp2 = [set() for _ in range(W)]
    for h in range(H):
        for w in range(W):
            d = D[h][w]
            if h==0 and w==0:
                dp2[0].add(d)
            for v in dp1[w]:
                v1 = v+d
                v2 = v-d if v>=d else -v+d
                dp2[w].add(v1)
                dp2[w].add(v2)
            if 0 < w:
                for v in dp2[w-1]:
                    v1 = v+d
                    v2 = v-d if v>=d else -v+d
                    dp2[w].add(v1)
                    dp2[w].add(v2)
        dp1 = dp2
        dp2 = [set() for _ in range(W)]
    return min(dp1[W-1])
ans = cal()
print(ans)