qyliang/CodeNanoFix huggingface dataset:
Buggy code:
"""from collections import *
from itertools import *
from bisect import *
from heapq import *

import math
from fractions import gcd"""

N=int(input())
T=list(map(int,input().split()))
A=list(map(int,input().split()))
mod=10**9+7
lst=[0 for i in range(N)]


lst[0]=T[0]
lst[N-1]=A[N-1]
if T[N-1]!=A[0]:
    print(0)
    exit()
for i in range(1,N):
    if T[i]>T[i-1]:
        if lst[i] and lst[i]!=T[i]:
            print(0)
            exit()
        lst[i]=T[i]

for i in range(N-2,-1,-1):
    if A[i]>A[i+1]:
        if lst[i] and lst[i]!=A[i]:
            print(0)
            exit()
        elif not lst[i] and T[i]<A[i]
        lst[i]=A[i]

count=1
for i in range(N):
    if not lst[i]:
        count=count*min(T[i],A[i])%mod
print(count)


Fixed code:
"""from collections import *
from itertools import *
from bisect import *
from heapq import *

import math
from fractions import gcd"""

N=int(input())
T=list(map(int,input().split()))
A=list(map(int,input().split()))
mod=10**9+7
lst=[0 for i in range(N)]


lst[0]=T[0]
lst[N-1]=A[N-1]
if T[N-1]!=A[0]:
    print(0)
    exit()
for i in range(1,N):
    if T[i]>T[i-1]:
        if lst[i] and lst[i]!=T[i]:
            print(0)
            exit()
        lst[i]=T[i]

for i in range(N-2,-1,-1):
    if A[i]>A[i+1]:
        if lst[i] and lst[i]!=A[i]:
            print(0)
            exit()
        elif not lst[i] and T[i]<A[i]:
            print(0)
            exit()
        lst[i]=A[i]

count=1
for i in range(N):
    if not lst[i]:
        count=count*min(T[i],A[i])%mod
print(count)
Buggy code:
import sys
input = sys.stdin.buffer.readline
from operator import itemgetter

def main():
    N = int(input())
    
    t = list(map(int,input().split()))
    a = list(map(int,input().split()))
    MOD = 10**9+7
    
    tt,tl = 0,[False for _ in range(N)]
    for x,num in enumerate(t):
        if num > tt:
            tl[x] = True
            tt = num
            
    at,al = 0,[False for _ in range(N)]
    for x,num in enumerate(a[::-1]):
        if num > at:
            al[-x-1] = True
            at = num
            
    print(tl,al)
    ans,now = 1,0
    for i in range(N):
        print(i,now)
        if tl[i] == True and al[i] == True:
            if now < t[i] == a[i]:
                now = min(t[i],a[i])
            else:
                print(-1)
                exit()
        elif tl[i] == True and al[i] == False:
            if now > t[i]:
                print(-1)
                exit()
            else:
                now = t[i]
        elif tl[i] == False and al[i] == True:
            if now < a[i]:
                print(-1)
                exit()
            else:
                now = a[i]
        else:
            ans *= min(t[i],a[i])
            ans %= MOD
    
    print(ans)

if __name__ == "__main__":
    main()


Fixed code:
import sys
input = sys.stdin.buffer.readline
from operator import itemgetter

def main():
    N = int(input())
    
    t = list(map(int,input().split()))
    a = list(map(int,input().split()))
    MOD = 10**9+7
    
    tt,tl = 0,[False for _ in range(N)]
    for x,num in enumerate(t):
        if num > tt:
            tl[x] = True
            tt = num
            
    at,al = 0,[False for _ in range(N)]
    for x,num in enumerate(a[::-1]):
        if num > at:
            al[-x-1] = True
            at = num

    ans,now = 1,0
    for i in range(N):
        if tl[i] == True and al[i] == True:
            if now < t[i] == a[i]:
                now = a[i]
            else:
                print(0)
                exit()
        elif tl[i] == True and al[i] == False:
            if t[i] > a[i]:
                print(0)
                exit()
            else:
                now = t[i]
        elif tl[i] == False and al[i] == True:
            if t[i] < a[i]:
                print(0)
                exit()
            else:
                now = a[i]
        else:
            ans *= min(t[i],a[i])
            ans %= MOD
    
    print(ans)

if __name__ == "__main__":
    main()
Buggy code:
import sys
input = sys.stdin.readline

N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))
maxh = [0] * N
if T[0] > A[0] or T[-1] < A[-1]:
    print(0)
    exit()

maxh[0] = -T[0]
for i in range(1, N):
    if T[i-1] == T[i]:
        maxh[i] = T[i]
    else:
        maxh[i] = -T[i]

maxh[-1] = -A[-1]
for i in range(N-1)[::-1]:
    if maxh[i] > 0:
        if A[i] == A[i+1]:
            maxh[i] = min(maxh[i], A[i])
        else:
            maxh[i] = -A[i]
    else:
        if A[i] == A[i+1]:
            if -maxh[i] < A[i]:
                print(0)
                exit()
        else:
            if -maxh[i] != A[i]:
                print(0)
                exit()

ans = 1
mod = 10**9+7
for i in range(N):
    if maxh[i] > 0:
        ans = ans * maxh[i] % mod
print(ans)


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

N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))
maxh = [0] * N
if T[0] > A[0] or T[-1] < A[-1]:
    print(0)
    exit()

maxh[0] = -T[0]
for i in range(1, N):
    if T[i-1] == T[i]:
        maxh[i] = T[i]
    else:
        maxh[i] = -T[i]

maxh[-1] = -A[-1]
for i in range(N-1)[::-1]:
    if maxh[i] > 0:
        if A[i] == A[i+1]:
            maxh[i] = min(maxh[i], A[i])
        else:
            if maxh[i] < A[i]:
                print(0)
                exit()
            else:
                maxh[i] = -A[i]
    else:
        if A[i] == A[i+1]:
            if -maxh[i] > A[i]:
                print(0)
                exit()
        else:
            if -maxh[i] != A[i]:
                print(0)
                exit()

ans = 1
mod = 10**9+7
for i in range(N):
    if maxh[i] > 0:
        ans = ans * maxh[i] % mod
print(ans)
Buggy code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))

M = [[-1, 10**9] for i in range(N)]

for i in range(N):
    if i == 0:
        M[i][0] = T[i]
    else:
        if T[i] != T[i-1]:
            M[i][0] = T[i]
        else:
            M[i][1] = T[i]

for i in range(N-1, -1, -1):
    if i == N-1:
        if M[i][0] != -1 and M[i][0] != A[i]:
            print(0)
            exit(0)
        else:
            M[i][0] = A[i]

    else:
        if A[i] != A[i+1]:
            if M[i][0] != -1 and M[i][0] != A[i]:
                print(0)
                exit(0)
            else:
                M[i][0] = A[i]
        else:
            M[i][1] = min(M[i][1], A[i])
print(M)
ans = 1
mod = (10 ** 9) + 7
for x, y in M:
    if x == -1:
        ans *= y
        ans %= mod

print(ans)


Fixed code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))

M = [[-1, 10**9] for i in range(N)]

for i in range(N):
    if i == 0:
        M[i][0] = T[i]
    else:
        if T[i] != T[i-1]:
            M[i][0] = T[i]
        else:
            M[i][1] = T[i]

for i in range(N-1, -1, -1):
    if i == N-1:
        if M[i][0] != -1 and M[i][0] != A[i]:
            print(0)
            exit(0)
        else:
            if M[i][1] >= A[i]:
                M[i][0] = A[i]
            else:
                print(0)
                exit(0)

    else:
        if A[i] != A[i+1]:
            if M[i][0] != -1 and M[i][0] != A[i]:
                print(0)
                exit(0)
            else:
                if A[i] <= M[i][1]:
                    M[i][0] = A[i]
                else:
                    print(0)
                    exit(0)
        else:
            M[i][1] = min(M[i][1], A[i])
ans = 1
mod = (10 ** 9) + 7
for x, y in M:
    if x == -1:
        ans *= y
        ans %= mod

print(ans)
Buggy code:
n = int(input())
t = list(map(int, input().split()))
a = list(map(int, input().split()))
mod = 10 ** 9 + 7
renew = [0] * n
b = 0
for i, h in enumerate(t):
	if b < h:
		renew[i] = h
		b = h
renew[-1] = t[-1]
b = 0
for i, h in enumerate(a[::-1]):
	if b < h:
		if 0 != renew[n - i - 1] != h:
			print(0)
			exit()
		renew[n - i - 1] = h
		b = h
ans = 1
for f, th, ah in zip(renew, t, a):
	if not f:
		ans *= min(th, ah)
		ans %= mod
print(ans)

Fixed code:
n = int(input())
t = list(map(int, input().split()))
a = list(map(int, input().split()))
mod = 10 ** 9 + 7
renew = [0] * n
b = 0
for i, h in enumerate(t):
	if b < h:
		if h > a[i]:
			print(0)
			exit()
		renew[i] = 1
		b = h
b = 0
for i, h in enumerate(a[::-1]):
	if b < h:
		if h > t[n - i - 1]:
			print(0)
			exit()
		renew[n - i - 1] = 1
		b = h
ans = 1
for f, th, ah in zip(renew, t, a):
	if not f:
		ans *= min(th, ah)
		ans %= mod
print(ans)
Buggy code:
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))
T_min = [0]*N
T_min[0] = T[0]
for i in range(1,N):
  if T[i-1]<T[i]:
    T_min[i] = T[i]
A_min = [0]*N
A_min[N-1] = A[N-1]
for i in range(N-2,-1,-1):
  if A[i+1]<A[i]:
    A_min[i] = A[i]
M = [0]*N
M_min = [0]*N
for i in range(N):
  M = min(T[i],A[i])
  M_min = max(T_min[i],A_min[i])
ans = 1
mod = 10**9+7
for i in range(N):
  if M[i]<M_min[i]:
    ans = 0
  else:
    ans*=M[i]+1-M_min[i]
    ans%=mod
print(ans)



Fixed code:
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))
T_min = [1]*N
T_min[0] = T[0]
for i in range(1,N):
  if T[i-1]<T[i]:
    T_min[i] = T[i]
A_min = [1]*N
A_min[N-1] = A[N-1]
for i in range(N-2,-1,-1):
  if A[i+1]<A[i]:
    A_min[i] = A[i]
M = [0]*N
M_min = [0]*N
for i in range(N):
  M[i] = min(T[i],A[i])
  M_min[i] = max(T_min[i],A_min[i])
ans = 1
mod = 10**9+7
for i in range(N):
  if M[i]<M_min[i]:
    ans = 0
  else:
    ans*=M[i]+1-M_min[i]
    ans%=mod
print(ans)
Buggy code:
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))

H = [[1,10 ** 9] for _ in range(N)]

for i in range(N):
  if i == 0:
    hmin = T[i]
    hmax = T[i]
  elif T[i-1] < T[i]:
    hmin = T[i]
    hmax = T[i]
  else:
    hmin = 1
  H[i][0] = hmin
  H[i][1] = hmax
  #print(H)
for i in range(N-1,-1,-1):
  if i == N-1:
    hmin = A[i]
    hmax = A[i]
  elif A[i] > A[i+1]:
    hmax = A[i]
    hmin = A[i]
  else:
    hmin = 1
  H[i][0] = max(hmin,H[i][0])
  H[i][1] = min(hmax,H[i][1])
  #print(H)

print(H)
ans = 1
for i in range(N):
  if H[i][1] < H[i][0]:
    print(0)
    exit()
  ans *= (H[i][1] - H[i][0] + 1)
  ans %= 10 ** 9 + 7
print(ans)

Fixed code:
N = int(input())
T = list(map(int,input().split()))
A = list(map(int,input().split()))

H = [[1,10 ** 9] for _ in range(N)]

for i in range(N):
  if i == 0:
    hmin = T[i]
    hmax = T[i]
  elif T[i-1] < T[i]:
    hmin = T[i]
    hmax = T[i]
  else:
    hmin = 1
  H[i][0] = hmin
  H[i][1] = hmax
  #print(H)
for i in range(N-1,-1,-1):
  if i == N-1:
    hmin = A[i]
    hmax = A[i]
  elif A[i] > A[i+1]:
    hmax = A[i]
    hmin = A[i]
  else:
    hmin = 1
  H[i][0] = max(hmin,H[i][0])
  H[i][1] = min(hmax,H[i][1])
  #print(H)

#print(H)
ans = 1
for i in range(N):
  if H[i][1] < H[i][0]:
    print(0)
    exit()
  ans *= (H[i][1] - H[i][0] + 1)
  ans %= 10 ** 9 + 7
print(ans)
Buggy code:
n=int(input())
a=[0]+list(map(int,input().split()))
b=list(map(int,input().split()))+[0]

m=[a[i] for i in range(1,n+1)]
l=[1 for _ in range(n)]
ans=1

for i in range(n):
	if a[i]<a[i+1]:
		l[i]=a[i+1]
		
for i in range(n-1,-1,-1):
	if b[i+1]<b[i]:
		if l[i]<b[i]:
			ans=0
		else:
			l[i]=b[i]
	m[i]=min(m[i],b[i])

for i in range(n):
	ans=(ans*(m[i]-l[i]+1))%(10**9+7)
	if m[i]<l[i]:
		ans=0
print(ans)

Fixed code:
n=int(input())
a=[0]+list(map(int,input().split()))
b=list(map(int,input().split()))+[0]

m=[a[i] for i in range(1,n+1)]
l=[1 for _ in range(n)]

for i in range(n):
	if a[i]<a[i+1]:
		l[i]=a[i+1]
		
ans=1
for i in range(n-1,-1,-1):
	if b[i+1]<b[i]:
		if l[i]>b[i]:
			ans=0
		else:
			l[i]=b[i]
	m[i]=min(m[i],b[i])
	
for i in range(n):
	ans=(ans*(m[i]-l[i]+1))%(10**9+7)
	if m[i]<l[i]:
		ans=0
print(ans)
Buggy code:
def inpl(): return list(map(int, input().split()))

N = int(input())
T = inpl()
A = inpl()

OK = True
D = [0]*N
D[0] = 1

for i in range(1, N):
    if T[i-1] < T[i]:
        D[i] = 1

if D[-1] and (A[-1] != T[-1]):
    OK = False
else:
    D[-1] = 1

for i in range(N-2, -1, -1):
    if A[i] > A[i+1]:
        if D[i] and (A[i] != T[i]):
            OK = False
        else:
            D[i] = 1

ans = OK
MOD = 10**9 + 7
for i in range(N):
    if D[i] == 0:
        ans = ans * min(A[i], T[i]) % MOD
print(ans)

Fixed code:
def inpl(): return list(map(int, input().split()))

N = int(input())
T = inpl()
A = inpl()

OK = True
D = [0]*N
D[0] = 1

for i in range(1, N):
    if T[i-1] < T[i]:
        D[i] = 1

if D[-1] and (A[-1] != T[-1]):
    OK = False
else:
    D[-1] = 1

for i in range(N-2, -1, -1):
    if A[i] > A[i+1]:
        if D[i] and (A[i] != T[i]):
            OK = False
        else:
            if A[i] > T[i]:
                OK = False
            D[i] = 1

ans = OK
MOD = 10**9 + 7
for i in range(N):
    if D[i] == 0:
        ans = ans * min(A[i], T[i]) % MOD
print(ans*1)
Buggy code:
n = int(input())
mount = [0]*n
a = list(map(int, input().split()))
b = list(map(int, input().split()))
mount[0] = a[0]
mount[-1] = b[-1]
pat = 1
mod = 10**9+7
for i in range(1,n-1):
  if a[i] > a[i-1]:
    if mount[i] != 0 and mount[i] != a[i]:
      print(0)
      exit()
    else:
      mount[i] = a[i]
  if b[n-i-1] > b[n-i]:
    if mount[n-i-1] != 0 and mount[n-i-1] != b[n-i-1]:
      print(0)
      exit()
    else:
      mount[n-i-1] = b[n-i-1]
for i in range(n):
  if mount[i] == 0:
    dx = 1
    while mount[i+dx] == 0:
      dx += 1
    this = min(mount[i-1],mount[i+dx])
    pat = pat*(this**dx)%mod
    for j in range(dx):
      mount[i+j] = this
print(pat)

Fixed code:
n = int(input())
mount = [0]*n
a = list(map(int, input().split()))
b = list(map(int, input().split()))
mount[0] = a[0]
mount[-1] = b[-1]
pat = 1
mod = 10**9+7
for i in range(1,n):
  if a[i] > a[i-1]:
    if mount[i] != 0 and mount[i] != a[i]:
      print(0)
      exit()
    else:
      mount[i] = a[i]
  if b[n-i-1] > b[n-i]:
    if mount[n-i-1] != 0 and mount[n-i-1] != b[n-i-1]:
      print(0)
      exit()
    else:
      mount[n-i-1] = b[n-i-1]
for i in range(n):
  if mount[i] == 0:
    dx = 1
    while mount[i+dx] == 0:
      dx += 1
    this = min(mount[i-1],mount[i+dx])
    pat = pat*(this**dx)%mod
    for j in range(dx):
      mount[i+j] = this
a2 = [0]*n
b2 = [0]*n
a2[0] = mount[0]
b2[-1] = mount[-1]
for i in range(1,n):
  a2[i] = max(mount[i],a2[i-1])
  b2[n-i-1] = max(mount[n-i-1],b2[n-i])
if a != a2 or b != b2:
  print(0)
else:
  print(pat)
Buggy code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))

tmax = T[-1]
amax = A[0]
tf = T.index(tmax)
af = N - (list(reversed(A))).index(amax) - 1

if tf > af or tmax != amax:
	print(0)

else:
	ans = 1
	for i in range(1, tf + 1):
		if T[i] == T[i - 1]:
			ans = (ans * T[i - 1]) % 1000000007

	for i in range(af - tf):
		ans = (ans * tmax) % 1000000007
	for i in range(af + 1, N):
		if A[i] == A[i - 1]:
			ans = (ans * A[i - 1]) % 1000000007

	print(ans)

Fixed code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))

tmax = T[-1]
amax = A[0]
tf = T.index(tmax)
af = N - (list(reversed(A))).index(amax) - 1

if tf > af or tmax != amax:
	print(0)

else:
	ans = 1
	for i in range(1, tf + 1):
		if T[i] == T[i - 1]:
			ans = (ans * T[i - 1]) % 1000000007

	for i in range(af - tf - 1):
		ans = (ans * tmax) % 1000000007
	for i in range(af + 1, N):
		if A[i] == A[i - 1]:
			ans = (ans * A[i - 1]) % 1000000007

	print(ans)
Buggy code:
N=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
ans=1
mod=10**9+7
for i in range(N):
  if i==0:
    if A[i]!=A[i+1] and T[i]!=A[i]:
      print(0)
      exit()
  elif i==N-1:
    if T[i]!=T[i-1] and T[i]!=A[i]:
      print(0)
      exit()
  else:
    if T[i]==T[i-1] and A[i]==A[i+1]:
      ans=(ans*min(T[i],A[i]))%mod
    elif T[i]!=T[i-1] and A[i]<T[i]:
      print(0)
      exit()
    elif A[i]!=A[i+1] and A[i]>T[i]:
      print(0)
      exit()
print(ans)
    
      

Fixed code:
N=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
if N==1:
  if A[0]==T[0]:
    print(1)
  else:
    print(0)
  exit()
  
ans=1
mod=10**9+7
for i in range(N):
  if i==0:
    if A[i]!=A[i+1] and T[i]!=A[i]:
      print(0)
      exit()
  elif i==N-1:
    if T[i]!=T[i-1] and T[i]!=A[i]:
      print(0)
      exit()
  else:
    if T[i]==T[i-1] and A[i]==A[i+1]:
      ans=(ans*min(T[i],A[i]))%mod
    elif T[i]!=T[i-1] and A[i]<T[i]:
      print(0)
      exit()
    elif A[i]!=A[i+1] and A[i]>T[i]:
      print(0)
      exit()
print(ans)
Buggy code:
N=int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))
a = 1
if T[0]>A[0] or A[-1]>T[-1] or T[-1]!=A[-1]:
    a*=0
for i in range(1,n):
    if T[i-1]!=T[i]:
        if T[i]>A[i]:
            a*=0
            break
        else:
            a*=1
    if A[i]!=A[i+1]:
        if T[i]<A[i]:
            a*=0
            break
        else:
            a*=1
    else:
        a=a*(min(T[i],A[i]))%(10**9+7)
print(a)

Fixed code:
N=int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))
a = 1
if T[0]>A[0] or A[-1]>T[-1] or T[-1]!=A[0]:
    a*=0
for i in range(1,N-1):
    if T[i-1]!=T[i]:
        if T[i]>A[i]:
            a*=0
            break
        else:
            a*=1
            continue
    if A[i]!=A[i+1]:
        if T[i]<A[i]:
            a*=0
            break
        else:
            a*=1
            continue
    a=(a*min(T[i],A[i]))%(10**9+7)
print(a)
Buggy code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))
h = []
for i in range(N):
    if i == 0:
        h.append(1)
    elif i == N - 1:
        h.append(1)
    else:
        if T[i] > T[i - 1]:
            h.append(1)
            if T[i] > A[i]:
                h[i] = 0
                break
        elif A[i] > A[i + 1]:
            h.append(1)
            if A[i] > T[i]:
                h[i] = 0
                break
        else:
            h.append(min([A[i], T[i]]) % 1000000007)

if max[T] != max[A]:
    h.append(0)
    
cnt = 1
for i in range(len(h)):
    cnt *= h[i]
                     
print(cnt % 1000000007)

Fixed code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))
h = []
for i in range(N):
    if i == 0:
        h.append(1)
    elif i == N - 1:
        h.append(1)
    else:
        if T[i] > T[i - 1]:
            h.append(1)
            if T[i] > A[i]:
                h[i] = 0
                break
        elif A[i] > A[i + 1]:
            h.append(1)
            if A[i] > T[i]:
                h[i] = 0
                break
        else:
            h.append(min([A[i], T[i]]))

if max(T) != max(A):
    h.append(0)
    
cnt = 1
for i in range(len(h)):
    cnt *= h[i]
    cnt %= 1000000007
                     
print(cnt % 1000000007)
Buggy code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))

T = [T[0]] + T + [T[-1]]
A = [A[0]] + A + [A[-1]]

ans = 1
mod = 10**9 + 7
for i in range(1, N+1):
    if T[i-1] < T[i] and A[i + 1] < A[i]:
        if T[i] != A[i]:
            ans *= 0
        continue

    if T[i-1] < T[i]:
        if A[i] < T[i]:
            ans *= 0
        continue

    if A[i] > A[i+1]:
        if T[i] < A[i]:
            ans *= 0
        continue

    if i == 1 or i == N:
        if T[1] != A[N] or T[N] != A[1]:
            ans *= 0
        else:
            ans *= 1
        continue
    
    ans = (ans * min(T[i], A[i])) % mod

print(ans % mod)


Fixed code:
N = int(input())
T = list(map(int, input().split()))
A = list(map(int, input().split()))

T = [T[0]] + T + [T[-1]]
A = [A[0]] + A + [A[-1]]

ans = 1
mod = 10**9 + 7
for i in range(1, N+1):
    if T[i-1] < T[i] and A[i + 1] < A[i]:
        if T[i] != A[i]:
            ans *= 0
        continue

    if T[i-1] < T[i]:
        if A[i] < T[i]:
            ans *= 0
        continue

    if A[i] > A[i+1]:
        if T[i] < A[i]:
            ans *= 0
        continue

    if i == 1 or i == N:
        if T[N] != A[1]:
            ans *= 0
        else:
            ans *= 1
        continue

    ans = (ans * min(T[i], A[i])) % mod

print(ans % mod)
Buggy code:
def read():
	return [int(i) for i in input().split(" ")]
N = int(input())
T = read()
A = read()
t = [(i != j, i) for i, j in zip(T, [None] + T)]
a = [(i != j, i) for i, j in zip(A, (A + [None])[1:])]
P = 1
for p, q in zip(t, a):
	if(p[0]):
		if(q[0]):
			if(p[1] != q[1]):
				print(0)
				exit()
		elif(q[1] < p[1]):
			print(0)
			exit()
	elif(q[0]):
		if(p[1] < q[1]):
			print(0)
			exit()
	else:
		P *= min(p[1], q[1]) % (10 ** 9 + 7)
print(P)


Fixed code:
def read():
	return [int(i) for i in input().split(" ")]
N = int(input())
T = read()
A = read()
T = [(i != j, i) for i, j in zip(T, [None] + T)]
A = [(i != j, i) for i, j in zip(A, (A + [None])[1:])]
P = 1
for p, q in zip(T, A):
	if(p[0]):
		if(q[0]):
			if(p[1] != q[1]):
				print(0)
				exit()
		else:
			if(q[1] < p[1]):
				print(0)
				exit()
	elif(q[0]):
		if(p[1] < q[1]):
			print(0)
			exit()
	else:
		P = P * min(p[1], q[1]) % (10 ** 9 + 7)
print(P)
Buggy code:
def read():
	return [int(i) for i in input().split(" ")]
N = int(input())
T = read()
A = read()
t = [(i != j, i) for i, j in zip(T, [None] + T)]
a = [(i != j, i) for i, j in zip(A, (A + [None])[1:])]
P = 1
for p, q in zip(t, a):
	if(p[0]):
		if(q[0]):
			if(p[1] != q[1]):
				print(0)
				exit()
	elif(not p[0] and not q[0]):	
		P *= min(p[1], q[1]) % (10 ** 9 + 7)
print(P)


Fixed code:
def read():
	return [int(i) for i in input().split(" ")]
N = int(input())
T = read()
A = read()
t = [(i != j, i) for i, j in zip(T, [None] + T)]
a = [(i != j, i) for i, j in zip(A, (A + [None])[1:])]
P = 1
for p, q in zip(t, a):
	if(p[0]):
		if(q[0]):
			if(p[1] != q[1]):
				print(0)
				exit()
		else:
			if(q[1] < p[1]):
				print(0)
				exit()
	elif(q[0]):
		if(p[1] < q[1]):
			print(0)
			exit()
	else:
		P = P * min(p[1], q[1]) % (10 ** 9 + 7)
print(P)
Buggy code:
n=int(input())
l= list(map(int, input().split()))
r= list(map(int, input().split()))
l=[0]+l
r.append(0)

res=1
max=1
if(max(l)!=max(r)):
	res=0
for i in range(n):
	if( (l[i]<l[i+1]) or (r[i]>r[i+1]) ):
		if( ( (l[i]<l[i+1]) and (r[i]>r[i+1]) ) and (l[i+1]!=r[i]) ):
			res*=0
	else:
		res*=min(l[i],r[i])
		res%=1000000007
print(res)

Fixed code:
n=int(input())
l= list(map(int, input().split()))
r= list(map(int, input().split()))
l=[0]+l
r.append(0)
 
res=1
if(l[-1]!=r[0]):
	res=0
for i in range(n):
	if( (l[i]<l[i+1]) or (r[i]>r[i+1]) ):
		if( ( (l[i]<l[i+1]) and (r[i]>r[i+1]) ) and (l[i+1]!=r[i]) ):
			res=0
		if( ( (l[i]<l[i+1]) and (r[i]==r[i+1]) ) and (l[i+1]>r[i]) ):
			res=0
		if( ( (l[i]==l[i+1]) and (r[i]>r[i+1]) ) and (l[i+1]<r[i]) ):
			res=0
	else:
		res*=min(l[i],r[i])
		res%=1000000007
print(res)