Buggy python submission (verdict: Runtime Error):
p = 10**9+7
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))
H = [0 for _ in range(N)]
flag = 0
if T[N-1]!=A[0]:
    flag = 1
if flag==0:
    indmaxT=0
    H[0] = T[0]
    for i in range(1,N):
        if T[i]>T[i-1]:
            H[i] = T[i]
            if H[i]==hmax:
                indmaxT = i
                break
    indmaxA = N-1
    H[N-1] = A[N-1]
    for i in range(N-2,-1,-1):
        if A[i]>A[i+1]:
            H[i]=A[i]
            if H[i]==hmax:
                indmaxA = i
                break
    if indmaxA<indmaxT:
        flag = 1
if flag==1:
    print(0)
else:
    hmax = max(H)
    cnt = 1
    cur = 0
    indH=0
    for i in range(1,indmaxT):
        if H[i]==0:
            cnt = (cnt*H[cur])%p
        elif H[i]>0:
            cur = i
    cur = N-1
    for i in range(N-2,indmaxA,-1):
        if H[i]==0:
            cnt = (cnt*H[cur])%p
        elif H[i]>0:
            cur = i
    for i in range(indmaxT+1,indmaxA):
        cnt = (cnt*hmax)%p
    print(cnt)

Fixed submission:
p = 10**9+7
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))
H = [0 for _ in range(N)]
cnt = 1
H[0] = T[0]
for i in range(1,N):
    if T[i]>T[i-1]:
        H[i] = T[i]
if H[-1]>0 and H[-1]!=A[-1]:
    cnt = 0
else:
    H[-1] = A[-1]
    for i in range(-2,-N-1,-1):
        if H[i]==0 and A[i]>A[i+1]:
            if A[i]<=T[i]:
                H[i] = A[i]
            else:
                cnt = 0
                break
        elif H[i]>0 and A[i]>A[i+1]:
            if H[i]==A[i]:continue
            else:
                cnt = 0
                break
    if cnt==1:
        for i in range(1,N-1):
            if H[i]==0:
                cnt = (cnt*min(T[i],A[i]))%p
print(cnt)

Buggy python submission (verdict: Runtime Error):
p = 10**9+7
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))
H = [0 for _ in range(N)]
flag = 0
if T[N-1]!=A[0]:
    flag = 1
if flag==0:
    H[0] = T[0]
    for i in range(1,N):
        if T[i]<T[i-1]:
            flag = 1
            break
        if T[i]>T[i-1]:
            H[i] = T[i]
if flag==0:
    H[N-1] = A[N-1]
    for i in range(N-2,-1,-1):
        if A[i]<A[i+1]:
            flag = 1
            break
        if A[i]>A[i+1]:
            if H[i]>0 and H[i]!=A[i]:
                flag = 1
                break
            else:
                H[i]=A[i]
if flag==1:
    print(0)
else:
    hmax = max(H)
    cnt = 1
    cur = 0
    for i in range(1,N):
        if H[i]==hmax:
            indH=i
            break
        if H[i]==0:
            cnt = (cnt*H[cur])%p
        elif H[i]>0:
            cur = i
    cur = N-1
    for i in range(N-2,-1,-1):
        if H[i]==hmax:
            indA = i
            break
        if H[i]==0:
            cnt = (cnt*H[cur])%p
        elif H[i]>0:
            cur = i
    for i in range(indH+1,indA):
        cnt = (cnt*hmax)%p
    print(cnt)

Fixed submission:
p = 10**9+7
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))
H = [0 for _ in range(N)]
cnt = 1
H[0] = T[0]
for i in range(1,N):
    if T[i]>T[i-1]:
        H[i] = T[i]
if H[-1]>0 and H[-1]!=A[-1]:
    cnt = 0
else:
    H[-1] = A[-1]
    for i in range(-2,-N-1,-1):
        if H[i]==0 and A[i]>A[i+1]:
            if A[i]<=T[i]:
                H[i] = A[i]
            else:
                cnt = 0
                break
        elif H[i]>0 and A[i]>A[i+1]:
            if H[i]==A[i]:continue
            else:
                cnt = 0
                break
    if cnt==1:
        for i in range(1,N-1):
            if H[i]==0:
                cnt = (cnt*min(T[i],A[i]))%p
print(cnt)