Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)


Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=[0,T[0]]
Ares[-1]=[0,A[-1]]
for i in range(1,n):
  if T[i]!=T[i-1]:
    Tres[i]=[0,T[i]]
  else:
    Tres[i]=[1,T[i]]
  if A[-i-1]!=A[-i]:
    Ares[-i-1]=[0,A[-i-1]]
  else:
    Ares[-i-1]=[1,A[-i-1]]
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==1 and aa==1:
    ans=ans*min(tb,ab)
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)


Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Chk_T,Chk_A=[False]*n,[False]*n
Max_T,Max_A=[0]*n,[0]*n
Chk_T[0],Chk_A[-1]=True,True
Max_T[0],Max_A[-1]=T[0],A[-1]

for i in range(1,n):
  if T[i]!=T[i-1]:
    Chk_T[i]=True
  Max_T[i]=T[i]
  if A[-i-1]!=A[-i]:
    Chk_A[-i-1]=True
  Max_A[-i-1]=A[-i-1]
ans=1
flag=True
for i in range(n):
  if Chk_T[i]==False and Chk_A[i]==False:
    ans=ans*min(Max_T[i],Max_A[i])
  elif Chk_T[i]==True and Chk_A[i]==False:
    if Max_T[i]>Max_A[i]:
      flag=False
  elif Chk_T[i]==False and Chk_A[i]==True:
    if Max_T[i]<Max_A[i]:
      flag=False
  else:
    if Max_T[i]!=Max_A[i]:
      flag=False
print(0 if flag==False else ans%mod)


Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]!=Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]!=Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]!=Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]!=Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]!=T[i-1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]!=A[n-i]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[-1]=(0,A[-1])
for i in range(1,n):
  if T[i]!=T[i-1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[-i-1]!=A[-i]:
    Ares[-i-1]=(0,A[-i-1])
  else:
    Ares[-i-1]=(1,A[-i-1])
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=[0,T[0]]
Ares[-1]=[0,A[-1]]
for i in range(1,n):
  if T[i]!=T[i-1]:
    Tres[i]=[0,T[i]]
  else:
    Tres[i]=[1,T[i]]
  if A[-i-1]!=A[-i]:
    Ares[-i-1]=[0,A[-i-1]]
  else:
    Ares[-i-1]=[1,A[-i-1]]
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=[0,T[0]]
Ares[-1]=[0,A[-1]]
for i in range(1,n):
  if T[i]>T[i-1]:
    Tres[i]=[0,T[i]]
  else:
    Tres[i]=[1,T[i]]
  if A[-i-1]>A[-i]:
    Ares[-i-1]=[0,A[-i-1]]
  else:
    Ares[-i-1]=[1,A[-i-1]]
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==1 and aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)


Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=[0,T[0]]
Ares[-1]=[0,A[-1]]
for i in range(1,n):
  if T[i]!=T[i-1]:
    Tres[i]=[0,T[i]]
  else:
    Tres[i]=[1,T[i]]
  if A[-i-1]!=A[-i]:
    Ares[-i-1]=[0,A[-i-1]]
  else:
    Ares[-i-1]=[1,A[-i-1]]
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==1 and aa==1:
    ans*=min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=[0,T[0]]
Ares[-1]=[0,A[-1]]
for i in range(1,n):
  if T[i]!=T[i-1]:
    Tres[i]=[0,T[i]]
  else:
    Tres[i]=[1,T[i]]
  if A[-i-1]!=A[-i]:
    Ares[-i-1]=[0,A[-i-1]]
  else:
    Ares[-i-1]=[1,A[-i-1]]
ans=1
for i in range(n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==1 and aa==1:
    ans*=min(tb,ab)
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Chk_T,Chk_A=[False]*n,[False]*n
Max_T,Max_A=[0]*n,[0]*n
Chk_T[0],Chk_A[-1]=True,True
Max_T[0],Max_A[-1]=T[0],A[-1]

for i in range(1,n):
  if T[i]!=T[i-1]:
    Chk_T[i]=True
  Max_T[i]=T[i]
  if A[-i-1]!=A[-i]:
    Chk_A[-i-1]=True
  Max_A[-i-1]=A[-i-1]
ans=1
flag=True
for i in range(n):
  if Chk_T[i]==False and Chk_A[i]==False:
    ans*=min(Max_T[i],Max_A[i])
  elif Chk_T[i]==True and Chk_A[i]==False:
    if Max_T[i]>Max_A[i]:
      flag=False
  elif Chk_T[i]==False and Chk_A[i]==True:
    if Max_T[i]<Max_A[i]:
      flag=False
  else:
    if Max_T[i]!=Max_A[i]:
      flag=False
print(0 if flag==False else ans%mod)


Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Chk_T,Chk_A=[False]*n,[False]*n
Max_T,Max_A=[0]*n,[0]*n
Chk_T[0],Chk_A[-1]=True,True
Max_T[0],Max_A[-1]=T[0],A[-1]

for i in range(1,n):
  if T[i]!=T[i-1]:
    Chk_T[i]=True
  Max_T[i]=T[i]
  if A[-i-1]!=A[-i]:
    Chk_A[-i-1]=True
  Max_A[-i-1]=A[-i-1]
ans=1
flag=True
for i in range(n):
  if Chk_T[i]==False and Chk_A[i]==False:
    ans*=min(Max_T[i],Max_A[i])
  elif Chk_T[i]==True and Chk_A[i]==False:
    if Max_T[i]>Max_A[i]:
      flag=False
  elif Chk_T[i]==False and Chk_A[i]==True:
    if Max_T[i]<Max_A[i]:
      flag=False
  else:
    if Max_T[i]!=Max_A[i]:
      flag=False
print(0 if flag==False else ans%mod)

Fixed submission:
mod=10**9+7
n=int(input())
T=[int(i) for i in input().split()]
A=[int(i) for i in input().split()]
Tres=[0]*n
Ares=[0]*n
Tres[0]=(0,T[0])
Ares[n-1]=(0,A[n-1])
for i in range(1,n):
  if T[i]>Tres[i-1][1]:
    Tres[i]=(0,T[i])
  else:
    Tres[i]=(1,T[i])
  if A[n-i-1]>Ares[n-i][1]:
    Ares[n-i-1]=(0,A[n-i-1])
  else:
    Ares[n-i-1]=(1,A[n-i-1])
if Tres[0]<=Ares[0]:
  ans=1
else:
  ans=0
for i in range(1,n):
  ta,tb=Tres[i]
  aa,ab=Ares[i]  
  if ta==aa==1:
    ans=ans*min(tb,ab)%mod
  elif ta==0 and aa==1 and tb>ab:
    ans=0
  elif ta==1 and aa==0 and tb<ab:
    ans=0
  elif ta==0 and aa==0 and tb!=ab:
    ans=0
print(ans%mod)