qyliang/CodeNanoFix huggingface dataset:
Buggy code:
s = input()
n = 0
m = 0
for i in range(0, len(s)):
    if s[i] == 'C':
        n = 1
        break
for j in range (0, len(s)):
    if s[j] == 'F':
        m = 1
        break
if n == 1 and m == 1 and i < j:
    print('Yes')
else:
    print('No')

Fixed code:
s = input()
n = 0
m = 0
for i in range(0, len(s)):
    if s[i] == 'C':
        n = 1
        break
for j in range (i, len(s)):
    if s[j] == 'F':
        m = 1
        break
if n == 1 and m == 1:
    print('Yes')
else:
    print('No')
Buggy code:
S = input()
f = 0
for s in S:
  if f==0:
    if s=="C":
      f = 1
  elif f==1:
    if s=="C":
      f = 2
if f == 2:
  print("Yes")
else:
  print("No")

Fixed code:
S = input()
f = 0
for s in S:
  if f==0:
    if s=="C":
      f = 1
  elif f==1:
    if s=="F":
      f = 2
if f == 2:
  print("Yes")
else:
  print("No")
Buggy code:
s = input()
if 0 <= s.find("C") < s.find("F"):
  print("Yes")
else:
  print("No")

Fixed code:
s = input()
if 0 <= s.find("C") < s.rfind("F"):
  print("Yes")
else:
  print("No")
Buggy code:
N=input()
c=0
flag = 0
for i in N:
    if i=='C' and  c==0 :c+=1
    if i=='F' and c==1: flag=1
if flag:print("Yes")
else flag:print("No")

Fixed code:
N=input()
c=0
flag = 0
for i in N:
    if i=='C' and  c==0 :c+=1
    if i=='F' and c==1: flag=1
if flag==1:print("Yes")
else :print("No")
Buggy code:
A=list(input())
for i in range(len(A)):
  if A[i]=="C":
    if "I" in A[i+1:]:
      print("Yes")
      exit()
print("No")


Fixed code:
A=list(input())
for i in range(len(A)):
  if A[i]=="C":
    if "F" in A[i+1:]:
      print("Yes")
      exit()
print("No")
Buggy code:
a1 = input().split()
n = 0
a = [a1[i] for i in range(len(a1))]
for i in range(len(a)):
    if a[i] == 'C':
        n = 1
    if n == 1 and a[i] == 'F':
        n = 2
if n == 2:
    print('Yes')
else:
    print('No')

Fixed code:
a1 = input()
n = 0
a = [a1[i] for i in range(len(a1))]
for i in range(len(a)):
    if a[i] == 'C':
        n = 1
    if n == 1 and a[i] == 'F':
        n = 2
if n == 2:
    print('Yes')
else:
    print('No')
Buggy code:
S = input()

c, f = False, False
for s in S:
	if s == "F":
		c = True
	if s == "F" and c:
		f = True
print(["Yes", "No"][not(all([c, f]))])


Fixed code:
S = input()

c, f = False, False
for s in S:
	if s == "C":
		c = True
	if s == "F" and c:
		f = True
print(["Yes", "No"][not(all([c, f]))])
Buggy code:
s=input()
l=len(s)
x='No'
f=0
for i in range(l):
  if s[i]=='C':
    f=1
  if s[i]=='F' and f=1:
    x='Yes'
    break
print(x)

Fixed code:
s=input()
l=len(s)
x='No'
f=0
for i in range(l):
  if s[i]=='C':
    f=1
  if s[i]=='F' and f==1:
    x='Yes'
    break
print(x)
Buggy code:
s = input()
ans = 'No'
c = s.find('C')
if c != -1:
	f = s[c:].find('F')
    if f != -1:
      ans = 'Yes'
print(ans)

Fixed code:
s = input()
ans = 'No'
c = s.find('C')
if c != -1:
  f = s[c:].find('F')
  if f != -1:
    ans = 'Yes'
print(ans)
Buggy code:
import sys
s = input()

for i, c in enumerate(s):
  if c == 'F':
    for j in s[i:]:
      if j=='C':
      	print('Yes')
      	sys.exit()
    print('No')
    sys.exit()

Fixed code:
import sys
s = input()

for i, c in enumerate(s):
  if c == 'C':
    for j in s[i:]:
      if j=='F':
      	print('Yes')
      	sys.exit()
    print('No')
    sys.exit()
print('No')
Buggy code:
s = input()
if -1 < s.find("C") < s.find("F"):
    print("Yes")
else:
    print("No")

Fixed code:
s = input()
if -1 < s.find('C') < s.rfind('F'):
    print('Yes')
else:
    print('No')
Buggy code:
S = input()
if 'C' in S[:-1]:
    a = S.index('C')
    if 'F' in S[:a]:
        print("Yes")
        exit()
print("No")

Fixed code:
S = input()
if 'C' in S[:-1]:
    a = S.index('C')
    if 'F' in S[a:]:
        print("Yes")
        exit()
print("No")
Buggy code:
s=input()

ans="No"
for i in range(len(s)):
  if s[i]=="C":
    for j in range(i+1,len(s)):
      if s[j]="F":
        print("Yes")
        exit()
else:
  print(ans)

Fixed code:
s = input()
ans = "No"
for i in range(len(s)):
    if s[i] == 'C':
        for j in range(i+1,len(s)):
            if s[j] == 'F':
                ans = 'Yes'

print(ans)
Buggy code:
s = input()
flag = 0
for i in len(range(s)):
  if s[i]=="C":
    flag=1
  if s[i]=="F" and flag=1:
    flag=2
if flag>1:
  print("Yes")
else:
  print("No")

Fixed code:
s = input()
flag = 0
for i in range(len(s)):
  if s[i]=="C":
    flag=1
  if s[i]=="F" and flag==1:
    flag=2
if flag>1:
  print("Yes")
else:
  print("No")
Buggy code:
s = list(input())
ans = ''
for i in s:
    if i in 'C':
        ans += i
    elif i in 'F':
        ans += i
print('Yes' if ans in 'CF' else 'No')

Fixed code:
s = list(input())
ans = ''
for i in s:
    if i in 'C':
        ans += i
    elif i in 'F':
        ans += i
print('Yes' if 'CF' in ans else 'No')
Buggy code:
s = input()
if s.find("C") and s.find("F") :
    print("Yes" if s.find("C") < s.rfind("F") else "No")
else :
    print("No")


Fixed code:
s=input()
if "C"in s and "F"in s:
  if s.find("C")<s.rfind("F"):print("Yes")
  else:print("No")
else:print("No")
Buggy code:
import re
print('Yes') if len(re.compile(r'.+C.+F.+').findall(input()))>=1 else print('No')

Fixed code:
import re
print('Yes') if len(re.compile(r'.*C.*F.*').findall(input()))>=1 else print('No')
Buggy code:
s = input()
if ("C" in s) and ("F" in s):
    if s.index("C") < s.index("F"):
        print("Yes")
        exit()
print("No")

Fixed code:
s=input()
if "C"in s and "F"in s:
  if s.index("C")<s.rindex("F"):
    print("Yes")
    exit()
print("No")
Buggy code:
a = input()
s = 0
t = 0
for i in a:
  if i == "C":
    s+=1
  if i == "F" and s==1:
    t = 1
if t == 0:
  print("Yes")
else:print("No")

Fixed code:
a = input()
s = 0
t = 0
for i in a:
  if i == "C":
    s=1
  if i == "F" and s==1:
    t = 1
if t == 1:
  print("Yes")
else:print("No")
Buggy code:
a=input()
c=False
f=False
for i in range(len(a))
  if c:
    if a[i]=='F'
    f=True
  else:
    if a[i]=='C'
    c=True
if c and f:
  print("Yes")
else:
  print("No")

Fixed code:
a=input()
c=False
f=False
for i in range(len(a)):
    if c==True:
        if a[i]=='F':
            f=True
    else:
        if a[i]=='C':
            c=True
if c==True and f==True:
    print("Yes")
else:
    print("No")
Buggy code:
s = input()
a = s.find('C')

if a == -1:
    print("No")
else:
    if s[a:].find('F') == -1:
        print("Yes")

Fixed code:
s = input()
a = s.find('C')
if a == -1:
    print("No")
else:
    if s[a:].find('F') == -1:
        print("No")
    else:
        print("Yes")
Buggy code:
s=input()
for i in range(len(s)):
    for j in range(i,len(s)):
        if s[i]=="C":
            if s[j]=="F":
                print("Yes")
                break
else:
    print("No")

Fixed code:
s=input()
a="No"
for i in range(len(s)):
    for j in range(i,len(s)):
        if s[i]=="C":
            if s[j]=="F":
                a="Yes"
                break
print(a)
Buggy code:
s = input()
c = False
f = False
for i in s:
    if (i=='C') c = True
    if (i=='F') f = True
    if (c==True and f==True) print("Yes")
if (not(c==True and f==True)) print("No")

Fixed code:
s = input()
c = False
f = False

for i in s:
  if i == 'C':
    c = True
  if i == 'F' and c:
    f = True
if f:
  print('Yes')
else:
  print('No')
Buggy code:
s = input()
n = len(s)
i = 0
while i < n:
  if s[i] == "C":
    break
i += 1
while i < n:
  if s[i] == "F":
    print("Yes")
    exit()
print("No")

Fixed code:
s = input()
n = len(s)
i = 0
while i < n:
  if s[i] == "C":
    break
  i += 1
while i < n:
  if s[i] == "F":
    print("Yes")
    exit()
  i += 1
print("No")
Buggy code:
s=input()
x=0;y=0
for i in range(len(s)):
  if s[i]=='C':
    x=i+1
    break
for j in range(len(s)):
  if s[j]=='F':
    y=j+1
if x*y!=0 and x<y:print('Yes')
else:print('No')​

Fixed code:
s=input()
x=0;y=0
for i in range(len(s)):
  if s[i]=='C':
    x=i+1
    break
for j in range(len(s)):
  if s[j]=='F':
    y=j+1
if x*y!=0 and x<y:print('Yes')
else:print('No')
Buggy code:
s = input()
c = 0
f = 0
for x in s:
    if x == 'C':c = 1
    if x == 'F':f = 1
if c==1 and f==1:
    print('Yes')
else:
    print('No')

Fixed code:
s = input()
c = 0
f = 0
for x in s:
    if x == 'C':c = 1
    if x == 'F' and c == 1:f = 1
if c==1 and f==1:
    print('Yes')
else:
    print('No')
Buggy code:
s=str(input())
if s.find('C')>0 and s.find('C')>0 and s.find('C')<s.rfind('F'):
    print('Yes')
else:
    print('No')


Fixed code:
s=input()
print("Yes" if s.find('C')<s.rfind('F') and s.find('C')>=0 else 'No')
Buggy code:
s = input()
C = s.find("C")
F = s.rfind("F")
print(C, F)
if C != -1 and F != -1 and C < F:
	print("Yes")
else:
	print("No")

Fixed code:
s = input()
C = s.find("C")
F = s.rfind("F")
if C != -1 and F != -1 and C < F:
	print("Yes")
else:
	print("No")
Buggy code:
s = input()
f = False
for i in range(len(s)):
	if s[i] == 'C':
		for j in range(i, len(s)):
			if s[j] == 'F':
				print('Yes')
				f = True
				break
		if f == True:
			print('No')
			break

Fixed code:
s = input()
f = False
l = False
for i in range(len(s)):
    if s[i] == 'C':
        for j in range(i, len(s)):
            if s[j] == 'F':
                print('Yes')
                f = True
                l = True
                break
        if f == False:
            print('No')
            l = True
            break
        else:
            l = True
            break
if l == False:
    print('No')
Buggy code:
s = input()
c = s.find('C')
f = s.find('F')
if c < f and c >= 0 and f >= 0:
  print('Yes')
else:
  print('No')
  

Fixed code:
s=input()
c=s.find("C")
f=s.rfind("F")
if c>=0 and f>=0 and c<f:
    print("Yes")
else:
    print("No")
Buggy code:
import sys
S = input().strip()

for j in range(len(S)):
  for k in range(j+1,len(S)):
    if S[i] == 'C' and S[j] == 'F':
      print('Yes')
      sys.exit()
print('No')

Fixed code:
import sys
S = input().strip()

for j in range(len(S)):
  for k in range(j+1,len(S)):
    if S[j] == 'C' and S[k] == 'F':
      print('Yes')
      sys.exit()
print('No')
Buggy code:
import sys
s=input()
if("C" in s and "F" in s):
  for i in range(len(s)):
    if(s[i]=="C"):c=i
  for i in range(len(s))[::-1]:
    if(s[i]==="F"):f=i
  if(c<f):
    print("Yes")
    sys.exit()
print("No")


Fixed code:
import sys
s=input()
if("C" in s and "F" in s):
  for i in range(len(s)):
    if(s[i]=="C"):
      c=i
      break
  for i in range(len(s))[::-1]:
    if(s[i]=="F"):
      f=i
      break
  if(c<f):
    print("Yes")
    sys.exit()
print("No")
Buggy code:
def solve():
    s = input()
    C_index, F_index = -1, -1
    for i, c in enumerate(s):
        if c == "C" and C_index == 0:
            C_index = i
        if c == "F":
            F_index = i
    if C_index < F_index and C_index > -1 and F_index > -1:
        print("Yes")
    else:
        print("No")
        
solve()

Fixed code:
def solve():
    s = input()
    C_index, F_index = -1, -1
    for i, c in enumerate(s):
        if c == "C" and C_index == -1:
            C_index = i
        if c == "F":
            F_index = i
    if C_index < F_index and C_index > -1 and F_index > -1:
        print("Yes")
    else:
        print("No")
        
solve()
Buggy code:
import re;print(["Yes","No"][re.match("C.*F",input())is None])

Fixed code:
import re;print(["Yes","No"][re.match(".*C.*F",input())is None])
Buggy code:
s = input()
print("Yes" if 0 <= s.find("C") < s.find("F")  else "No")

Fixed code:
s=input()
print('Yes'if 0<=s.find('C')<s.rfind('F')else'No')
Buggy code:
s = input()
if "C" in s and "F" in s:
  a = s.lindex("C")
  b = s.rindex("F")
  if a < b:
    print("Yes")
  else:
    print("No")
else:
  print("No")


Fixed code:
s = input()
if "C" in s and "F" in s:
  a = s.index("C")
  b = s.rindex("F")
  if a < b:
    print("Yes")
  else:
    print("No")
else:
  print("No")
Buggy code:
s = input()
print(s)
state = 0
for c in s:
    if c == 'C':
        if state == 0:
            state = 1
    if c == 'F':
        if state == 1:
            state = 2

if state == 2:
    print('Yes')
else:
    print('No')



Fixed code:
s = input()
state = 0
for c in s:
    if c == 'C':
        if state == 0:
            state = 1
    if c == 'F':
        if state == 1:
            state = 2

if state == 2:
    print('Yes')
else:
    print('No')
Buggy code:
#coding: utf-8

import re

s = input()
if re.search("C.*F", s) is not None:
    print('Yes')
else:
    print('None')


Fixed code:
#coding: utf-8

import re

s = input()
if re.search("C.*F", s) is not None:
    print('Yes')
else:
    print('No')
Buggy code:
s = input()
result = "No"
for i in range(len(s)):
	if s[i] == "C":
		for j in range(i+1, len(s)):
			if s[j] == "F":
				result = "YES"
		break
print(result)

Fixed code:
s = input()
result = "No"
for i in range(len(s)):
	if s[i] == "C":
		for j in range(i+1, len(s)):
			if s[j] == "F":
				result = "Yes"
		break
print(result)
Buggy code:
def main():
    s = input()
    a = s.index('C')
    if a and 'F' in s[a+1:]:
        print('Yes')
    else:
        print('No')

main()


Fixed code:
def main():
    s = input()
    if 'C' in s and 'F' in s[s.index('C')+1:]:
        print('Yes')
    else:
        print('No')

main()
Buggy code:
s = input()
if "C" in s:
    if "F" in s[s.index("C"):]:
        print("Yes")
else:
    print("No")

Fixed code:
s = input()
if "C" in s and "F" in s[s.index("C"):]:
	print("Yes")
else:
	print("No")
Buggy code:
s = input()
a = s.find("C")
b = s.find("F")
if 0 <= a < b:
    print("Yes")
else:
    print("No")


Fixed code:
s = input()
a = s.find("C")
b = s.rfind("F")
if 0 <= a < b:
    print("Yes")
else:
    print("No")
Buggy code:
import re

s = input()

if re.match(r'C.*F', s):
    print('Yes')
else:
    print('No')



Fixed code:
import re

s = input()

pattern = r".*C.*F"
match = re.match(pattern, s)
if match:
    print('Yes')
else:
    print('No')
Buggy code:
s = input()
if "C" in s and "F" in s and s.index("C") < s.index("F"):
	print("Yes")
else:
	print("No")

Fixed code:
s = input()

if 'C' in s and 'F' in s and s.index('C') < s.rindex('F'):
    print('Yes')
else:
    print('No')
Buggy code:
n = int(input())
t = list(map(int, input().split()))
a = list(map(int, input().split()))
mod = 10 ** 9 + 7

tmax, amax = max(t), max(a)
if any(ti == ai == tmax == amax for ti, ai in zip(t, a)):
    print(0)
    exit()

ans = 1
for i in range(1, n - 1):
    if ((t[i - 1] < t[i] and t[i] > a[i])
        or (a[i] > a[i + 1] and t[i] < a[i])):
            print(0)
            break
    elif t[i - 1] == t[i] and a[i] == a[i + 1]:
        ans = ans * min(t[i], a[i]) % mod
else:
    print(ans)


Fixed code:
n = int(input())
t = list(map(int, input().split()))
a = list(map(int, input().split()))
mod = 10 ** 9 + 7

tmax, amax = max(t), max(a)
if not any(ti == ai == tmax == amax for ti, ai in zip(t, a)):
    print(0)
    exit()

ans = 1
for i in range(1, n - 1):
    if ((t[i - 1] < t[i] and t[i] > a[i])
        or (a[i] > a[i + 1] and t[i] < a[i])):
            print(0)
            break
    elif t[i - 1] == t[i] and a[i] == a[i + 1]:
        ans = ans * min(t[i], a[i]) % mod
else:
    print(ans)
Buggy code:
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 code:
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
hmax = A[0]
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:
    cnt = 1
    cur = 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)
Buggy code:
n = int(input())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
ai = [-1] * n
bi = [-1] * n
r = [-1] * n
ai[0]=a[0]
bi[-1]=b[-1]
for i in range(1,n):
  if a[i] > a[i-1]:
    ai[i] = a[i]
for i in range(n-2,-1,-1):
  if b[i] > b[i+1]:
    bi[i] = b[i]
ret = 1
r = [0] * n
for i in range(n):
  if ai[i]!=bi[i] and ai[i]!=-1 and bi[i]!=-1:
    print(0)
    exit()
  elif ai[i]==-1 and bi[i]==-1:
    ret *= min(a[i], b[i])
    ret %= 10**9+7
  else:
    r[i]=max(ai[i], bi[i])
x = 0
for i in range(n):
  x = max(x, r[i])
  if x!=a[i]:
    print(0)
    exit()
for i in range(n-1, -1, -1):
  x = max(x, r[i])
  if x!=b[i]:
    print(0)
    exit()
print(ret)

Fixed code:
n = int(input())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
ai = [-1] * n
bi = [-1] * n
r = [-1] * n
ai[0]=a[0]
bi[-1]=b[-1]
for i in range(1,n):
  if a[i] > a[i-1]:
    ai[i] = a[i]
for i in range(n-2,-1,-1):
  if b[i] > b[i+1]:
    bi[i] = b[i]
ret = 1
r = [0] * n
for i in range(n):
  if ai[i]!=bi[i] and ai[i]!=-1 and bi[i]!=-1:
    print(0)
    exit()
  elif ai[i]==-1 and bi[i]==-1:
    ret *= min(a[i], b[i])
    ret %= 10**9+7
  else:
    r[i]=max(ai[i], bi[i])
x = 0
for i in range(n):
  x = max(x, r[i])
  if x!=a[i]:
    print(0)
    exit()
x = 0
for i in range(n-1, -1, -1):
  x = max(x, r[i])
  if x!=b[i]:
    print(0)
    exit()
print(ret)
Buggy code:
n = int(input())
t = list(map(int,input().split()))
a = list(map(int,input().split()))
k = [-1 for i in range(n)]
now = 0
if t[0] != a[-1]:
    print(0)
    exit()
for i in range(n):
    if t[i] > now:
        k[i] = t[i]
        now = t[i]

now = 0
for i in reversed(range(n)):
    if a[i] > now:
        if k[i] == -1:
            k[i] = a[i]
            now = a[i]
        elif k[i] == a[i]:
            now = a[i]
        elif k[i] != a[i]:
            print(0)
            exit()
ans = 1
l = 0
cou = 0
mod = 10**9 + 7
for i in range(n):
    if k[i] != -1 and l == 0:
        l = k[i]
    elif k[i] != -1 and l != 0:
        ans *= pow(min(l,k[i]),cou,mod)
        ans %= mod
        l = k[i]
        cou = 0
    elif k[i] == -1:
        cou += 1
print(ans)

Fixed code:
n = int(input())
t = list(map(int,input().split()))
a = list(map(int,input().split()))
k = [-1 for i in range(n)]
now = 0
if t[-1] != a[0]:
    print(0)
    exit()
for i in range(n):
    if t[i] > now:
        k[i] = t[i]
        now = t[i]

now = 0
for i in reversed(range(n)):
    if k[i] == -1:
        if a[i] > now:
            k[i] = a[i]
            now = a[i]
    if k[i] != -1:
        if a[i] > now:
            now = a[i]
        if k[i] > now:
            print(0)
            exit()

ans = 1
l = 0
cou = 0
mod = 10**9 + 7
for i in range(n):
    if k[i] != -1 and l == 0:
        l = k[i]
    elif k[i] != -1 and l != 0:
        ans *= pow(min(l,k[i]),cou,mod)
        ans %= mod
        l = k[i]
        cou = 0
    elif k[i] == -1:
        cou += 1
print(ans)
Buggy code:
n = int(input())
t = list(map(int, input().split()))
a = list(map(int, input().split()))
MOD = 10**9 + 7
t_max = max(t)
for i in range(n):
  if a[i] == t_max:
    max_ind = i
    break
if t[max_ind] != a[max_ind] or t[-1] != a[0]:
  print(0)
else:
  idx = []
  before = 0
  for i in range(n):
    if before == t[i]:
      idx .append(i)
    before = t[i]
  if len(idx) == 0:
    print(1)
  else:
    new_idx = []
    for j in idx:
      if j < n-1 and a[j] == a[j+1]:
        new_idx.append(j)
    if len(new_idx) == 0:
      print(0)
    else:
      ans = 1
      for k in new_idx:
        ans *= min(t[k], a[k])
        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
t_max = max(t)
for i in range(n):
  if t[i] == t_max:
    max_ind = i
    break
if t[max_ind] != a[max_ind] or t[-1] != a[0]:
  print(0)
else:
  idx = []
  before = 0
  for i in range(n):
    if before == t[i]:
      idx .append(i)
    before = t[i]
  if len(idx) == 0:
    print(1)
  else:
    new_idx = []
    for j in idx:
      if j < n-1 and a[j] == a[j+1]:
        new_idx.append(j)
    if len(new_idx) == 0:
      print(1)
    else:
      ans = 1
      for k in new_idx:
        ans *= min(t[k], a[k])
        ans %= MOD
      print(ans)
Buggy code:
mod = 1000000007
n= int(input())
t= list(map(int,input().split()))
a= list(map(int,input().split()))
tb = [-1]*n
pre=-1
for i in range(n):
    if i==0:tb[i]=1
    else:
        if pre!=t[i]:tb[i]=1
    pre=t[i]
ab = [-1]*n
post=-1
for i in range(n-1,-1,-1):
    if i==n-1:post=a[i]
    else:
        if post!=a[i]:
            ab[i]=1
    post=a[i]
er = False
b=1
for i in range(n):
    if tb[i]==1 or ab[i]==1:
        if tb[i]==1 and ab[i]==1:
            if t[i]==a[i]:pass
            else:
                er=True
                break
        else:pass
    else:
        m = min(a[i],t[i])
        b = ((b% mod) * (m % mod)) % mod
if er:print(0)
else:print(b)

Fixed code:
mod = 1000000007
n= int(input())
t= list(map(int,input().split()))
a= list(map(int,input().split()))
tb = [-1]*n
pre=-1
for i in range(n):
    if i==0:tb[i]=1
    else:
        if pre!=t[i]:tb[i]=1
    pre=t[i]
ab = [-1]*n
post=-1
for i in range(n-1,-1,-1):
    if i==n-1:ab[i]=1
    else:
        if post!=a[i]:ab[i]=1
    post=a[i]
er = False
if a[0]!=t[-1]:er=True
else:
    b=1
    for i in range(n):
        if tb[i]==1 or ab[i]==1:
            if tb[i]==1 and ab[i]==1:
                if t[i]==a[i]:pass
                else:
                    er=True
                    break
            else:
                if tb[i]==1:
                    if a[i]<t[i]:
                        er=True
                        break
                elif ab[i]==1:
                    if a[i]>t[i]:
                        er = True
                        break
        else:
            m = min(a[i],t[i])
            b = ((b% mod) * (m % mod)) % mod
if er:print(0)
else:print(b)
Buggy code:
n=int(input())
t=[int(j) for j in input().split()]
a=[int(j) for j in input().split()]
tmp=0
l=[]
for i in t:
    if tmp<i:
        l.append(-i)
        tmp=i
    else:
        l.append(i)
tmp=0
ans=1
mod=10**9+7
for i in range(n)[::-1]:
    if tmp<a[i]:
        if l[i]>=a[i]:
            tmp=a[i]
        else:
            if l[i]>0 or -l[i]!=a[i]:
                print(0)
                exit()
    else:
        if l[i]>0:
            ans=(ans*min(a[i],l[i]))%mod
print(ans)

Fixed code:
n=int(input())
t=[int(j) for j in input().split()]
a=[int(j) for j in input().split()]
tmp=0
l=[]
for i in t:
    if tmp<i:
        l.append(-i)
        tmp=i
    else:
        l.append(i)
tmp=0
ans=1
mod=10**9+7
for i in range(n)[::-1]:
    if tmp<a[i]:
        tmp=a[i]
        if l[i]<a[i]:
            if l[i]>0 or -l[i]!=a[i]:
                print(0)
                exit()
    else:
        if l[i]>0:
            ans=(ans*min(a[i],l[i]))%mod
print(ans)