Buggy python submission (verdict: Runtime Error):
import sys
input = sys.stdin.readline

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

ZERO=1<<(H+W)
DP=[[1<<ZERO for i in range(W)] for j in range(H)]

DP[0][0]=1<<H+W+SA[0][0]

for i in range(H):
    for j in range(W):
        if i+1<H:
            DP[i+1][j]|=DP[i][j]<<SA[i+1][j]
            DP[i+1][j]|=DP[i][j]>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=DP[i][j]<<SA[i][j+1]
            DP[i][j+1]|=DP[i][j]>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*2+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-H-W))

print(ANS)


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

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[0 for i in range(W)] for j in range(H)]

DP[0][0]=1<<(H+W)*80+SA[0][0]

for i in range(H):
    for j in range(W):
        tempbit=DP[i][j]
        if i+1<H:
            DP[i+1][j]|=tempbit<<SA[i+1][j]
            DP[i+1][j]|=tempbit>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=tempbit<<SA[i][j+1]
            DP[i][j+1]|=tempbit>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*160+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-(H+W)*80))

print(ANS)

Buggy python submission (verdict: Runtime Error):
import sys
input = sys.stdin.readline

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

ZERO=1<<(H+W)
DP=[[1<<ZERO for i in range(W)] for i in range(H)]

DP[0][0]=1<<H+W+SA[0][0]

for i in range(H):
    for j in range(W):
        if i+1<H:
            DP[i+1][j]|=DP[i][j]<<SA[i+1][j]
            DP[i+1][j]|=DP[i][j]>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=DP[i][j]<<SA[i][j+1]
            DP[i][j+1]|=DP[i][j]>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*2+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-H-W))

print(ANS)


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

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[0 for i in range(W)] for j in range(H)]

DP[0][0]=1<<(H+W)*80+SA[0][0]

for i in range(H):
    for j in range(W):
        tempbit=DP[i][j]
        if i+1<H:
            DP[i+1][j]|=tempbit<<SA[i+1][j]
            DP[i+1][j]|=tempbit>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=tempbit<<SA[i][j+1]
            DP[i][j+1]|=tempbit>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*160+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-(H+W)*80))

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 i in range(H)]
B=[list(map(int,input().split())) for i in range(H)]

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[0 for i in range(W)] for i in range(H)]

DP[0][0]=1<<SA[0][0]

def next(i,j):
    RET=[]
    if i+j<=6400:
        RET.append(i+j)
    if abs(i-j)<=6400:
        RET.append(abs(i-j))

    return RET

for i in range(H):
    for j in range(W):
        for k in range(6400):
            if 1<<k & DP[i][j]==0:
                continue
            if i+1<H:
                for r in next(k,SA[i+1][j]):
                    DP[i+1][j]|=1<<r

            if j+1<W:
                for r in next(k,SA[i][j+1]):
                    DP[i][j+1]|=1<<r
                
for i in range(6401):
    if 1<<i & DP[-1][-1]!=0:
        print(i)
        break


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

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[0 for i in range(W)] for j in range(H)]

DP[0][0]=1<<(H+W)*80+SA[0][0]

for i in range(H):
    for j in range(W):
        tempbit=DP[i][j]
        if i+1<H:
            DP[i+1][j]|=tempbit<<SA[i+1][j]
            DP[i+1][j]|=tempbit>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=tempbit<<SA[i][j+1]
            DP[i][j+1]|=tempbit>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*160+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-(H+W)*80))

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 i in range(H)]
B=[list(map(int,input().split())) for i in range(H)]


SA=[[0]*(W+1) for i in range(H+1)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[[] for i in range(W+1)] for i in range(H+1)]

DP[0][0]=[SA[0][0]]

MID=(H+W-2)//2

def next(i,j,t):
    if t<=MID:
        return [i+j,abs(i-j)]
    RET=[]
    lim=80*(MID-abs(t-MID)+2)
    if i+j<=lim:
        RET.append(i+j)

    if abs(i-j)<=lim:
        RET.append(abs(i-j))

    return RET

for i in range(H):
    for j in range(W):
        for k in set(DP[i][j]):
            DP[i+1][j].extend(next(k,SA[i+1][j],i+j))
            DP[i][j+1].extend(next(k,SA[i][j+1],i+j))
                
print(min(DP[H-1][W-1]))


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

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[0 for i in range(W)] for j in range(H)]

DP[0][0]=1<<(H+W)*80+SA[0][0]

for i in range(H):
    for j in range(W):
        tempbit=DP[i][j]
        if i+1<H:
            DP[i+1][j]|=tempbit<<SA[i+1][j]
            DP[i+1][j]|=tempbit>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=tempbit<<SA[i][j+1]
            DP[i][j+1]|=tempbit>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*160+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-(H+W)*80))

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 i in range(H)]
B=[list(map(int,input().split())) for i in range(H)]

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[] for i in range(W)]

DP[0]=[SA[0][0]]

for i in range(H):
    NDP=[[] for _ in range(W)]
    for j in range(W):
        for k in set(DP[j]):
            if k>=6400:
                continue
            if i+1<H:
                NDP[j].append(k+SA[i+1][j])
                NDP[j].append(abs(k-SA[i+1][j]))
                
            if j+1<W:
                DP[j+1].append(k+SA[i][j+1])
                DP[j+1].append(abs(k-SA[i][j+1]))

    if i==H-1:
        print(min(DP[-1]))
        break
    DP=NDP
                


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

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[0 for i in range(W)] for j in range(H)]

DP[0][0]=1<<(H+W)*80+SA[0][0]

for i in range(H):
    for j in range(W):
        tempbit=DP[i][j]
        if i+1<H:
            DP[i+1][j]|=tempbit<<SA[i+1][j]
            DP[i+1][j]|=tempbit>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=tempbit<<SA[i][j+1]
            DP[i][j+1]|=tempbit>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*160+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-(H+W)*80))

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 i in range(H)]
B=[list(map(int,input().split())) for i in range(H)]

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[[] for i in range(W)] for i in range(H)]

DP[0][0]=[SA[0][0]]

def next(i,j):
    RET=[]
    if i+j<=6400:
        RET.append(i+j)
    RET.append(abs(i-j))

    return RET

for i in range(H):
    for j in range(W):
        for k in set(DP[i][j]):
            if i+1<H:
                DP[i+1][j].extend(next(k,SA[i+1][j]))
            if j+1<W:
                DP[i][j+1].extend(next(k,SA[i][j+1]))
                
print(min(DP[-1][-1]))

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

H,W=map(int,input().split())

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

SA=[[0]*W for i in range(H)]

for i in range(H):
    for j in range(W):
        SA[i][j]=abs(A[i][j]-B[i][j])

DP=[[0 for i in range(W)] for j in range(H)]

DP[0][0]=1<<(H+W)*80+SA[0][0]

for i in range(H):
    for j in range(W):
        tempbit=DP[i][j]
        if i+1<H:
            DP[i+1][j]|=tempbit<<SA[i+1][j]
            DP[i+1][j]|=tempbit>>SA[i+1][j]

        if j+1<W:
            DP[i][j+1]|=tempbit<<SA[i][j+1]
            DP[i][j+1]|=tempbit>>SA[i][j+1]

ANS=1<<30
for i in range((H+W)*160+1):
    if 1<<i & DP[-1][-1]!=0:
        ANS=min(ANS,abs(i-(H+W)*80))

print(ANS)