qyliang/CodeNanoFix huggingface dataset:
# Buggy code:
N = int(input())
S = input()

def f(s, t):
  set_s = set()
  set_t = set()
  for i in s:
    set_s.add(i)
  for i in t:
    set_t.add(i)
  return len( set_s & set_t )

for i in range(1,N):
  s = S[i:]
  t = S[:i]
  ans = max(ans, f(s ,t))
print(ans)

# Fixed code:
N = int(input())
S = input()

def f(s, t):
  set_s = set()
  set_t = set()
  for i in s:
    set_s.add(i)
  for i in t:
    set_t.add(i)
  return len( set_s & set_t )

ans = 0
for i in range(1,N):
  s = S[i:]
  t = S[:i]
  ans = max(ans, f(s ,t))
print(ans)
# Buggy code:
n=int(input())
s=list(input())
a=[]
l=[]
for i in s:
  kind=0
  l.append(i)
  for j in list(set(l)):
    if j in list(set(s)):
      kind+=1
  a.append(kind)
print(max(a))

# Fixed code:
n=int(input())
s=list(input())
a=[]
l=[]
for i in range(n):
  kind=0
  l.append(s.pop(0))
  for j in list(set(l)):
    if j in list(set(s)):
      kind+=1
  a.append(kind)
print(max(a))
# Buggy code:
n=int(input())
s=list(input())

num=0
for i in range(n):
    x=set(s[:n])
    y=set(s[n:])
    if len(x&y)>num:
        num=len(x&y)

print(num)




# Fixed code:
n=int(input())
s=list(input())

num=0
for i in range(n):
    x=set(s[:i])
    y=set(s[i:])
    if len(x&y)>num:
        num=len(x&y)

print(num)
# Buggy code:
N = int(input())
S = input()
print(max(len(set[:i]&set[i:])) for i in range(N))

# Fixed code:
N = int(input())
S = list(input())

ans = max([len(set(S[:i])&set(S[i:])) for i in range(N)])
print(ans)
# Buggy code:
N=int(input())
S=list(input())
for i in range(N-1):
    a=set(S[:i+1])
    b=set(S[i+1:])
    ans=max(ans,len(a&b))
print(ans)

# Fixed code:
N=int(input())
S=list(input())
ans=0
for i in range(N-1):
    a=set(S[:i+1])
    b=set(S[i+1:])
    ans=max(ans,len(a&b))
print(ans)
# Buggy code:
def main():
    N = int(input())
    S = input()

    count = 0
    max_ = 0

    for i in range(N):
        x = set(S[:i])
        y = set(S[:i])

        max_ = max(len(x&y), max_)

    print(max_)


if __name__=='__main__':
    main()

# Fixed code:
def main():
    N = int(input())
    S = input()

    count = 0
    max_ = 0

    for i in range(N):
        x = set(S[:i])
        y = set(S[i:])

        max_ = max(len(x&y), max_)

    print(max_)


if __name__=='__main__':
    main()
# Buggy code:
n = int(input())
st = input()
b = 0
for i in range(1,n):
    k = list(set(st[:i]))
    u = 0
    for j in range(len(k)):
        if st[j] in st[i:]:
            u += 1
    if u > b:
        b = u
print(str(b))

# Fixed code:
n = int(input())
st = input()
b = 0
for i in range(n):
    k = list(set(st[:i]))
    u = 0
    for j in range(len(k)):
        if k[j] in st[i:]:
            u += 1
    if u > b:
        b = u
print(str(b))
# Buggy code:
N = int(input())
S = input()
S_set = list(set(S))
mx_ans = 0
for n in range(N):
  X = S[:n]
  Y = S[n:]
  ans = 0
  for i in range(len(S_set)):
    if X.count(S_set[i]) == Y.count(S_set[i]):
      ans += 1
  if mx_ans < ans:
    mx_ans = ans
print(mx_ans)

# Fixed code:
N = int(input())
S = input()
S_set = list(set(S))
mx_ans = 0
for n in range(N):
  X = S[:n]
  Y = S[n:]
  ans = 0
  for i in range(len(S_set)):
    if (X.count(S_set[i])>0) and (Y.count(S_set[i])>0):
      ans += 1
  if mx_ans < ans:
    mx_ans = ans
print(mx_ans)
# Buggy code:
n = int(input())
s = input()

common = 0
for i in range(1,len(s)+):
    common = min(common, len(set(s[:i]).intersection(set[i:])))

print(common)

# Fixed code:
n = int(input())
s = input()

common = 0
for i in range(1,len(s)+1):
    common = max(common, len(set(s[:i]).intersection(set(s[i:]))))

print(common)
# Buggy code:
n = input()
s = input()
l = int(n)
count = 0
for i in range(0,l):
    s1 = len(set(s[:i]))
    s2 = len(set(s[i:]))
    count = max(count,s1 & s2)
print(count)


# Fixed code:
n = input()
s = input()
l = int(n)
count = 0
for i in range(1,l):
    s1 = set(s[:i])
    s2 = set(s[i:])
    count = max(count,len(s1 & s2))
print(count)
# Buggy code:
N = int(input())
S = input()

posDevide = 1
maxMatchWordNum = 0

while posDevide < N:
        arrayNum = 1
        matchWordNum = 0
        while arrayNum <=  posDevide:
                matchWordNum = matchWordNum + 1 if  bool( S.count( S[ arrayNum - 1 ], posDevide, N-1 )) else matchWordNum
                arrayNum += 1

        maxMatchWordNum = matchWordNum if matchWordNum > maxMatchWordNum else maxMatchWordNum
        posDevide += 1

print(maxMatchWordNum)

# Fixed code:
N = int(input())
S = input()

posDevide = 1
maxMatchWordNum = 0

while posDevide <=  N - 1:
        arrayNum = 0
        matchWordNum = 0
        while arrayNum < posDevide:
                if arrayNum  == S.find( S[ arrayNum ], 0, posDevide):
                        matchWordNum = matchWordNum + 1 if  bool( S.count( S[ arrayNum ], posDevide, N )) else matchWordNum

                arrayNum += 1

        maxMatchWordNum = matchWordNum if matchWordNum > maxMatchWordNum else maxMatchWordNum
        posDevide += 1

print(maxMatchWordNum)
# Buggy code:
n = int(input())
s = list(input())

max = 0
for i in range(1,n):
    l = len(set(s[:i]&s[i:]))
    if l > max:
        max = l

print(max)

# Fixed code:
n = int(input())
s = list(input())


max = 0
for i in range(1,n):
    xs = set(s[:i])
    ys = set(s[i:])
    l = len(xs&ys)
    if l > max:
        max = l

print(max)
# Buggy code:
N = int(input())
S = list(map(str,input()))
print(S)
icchi=[]
num=[]
for i in range(0,N-1):
	p_list=[]
	q_list=[]
	for p in range(0,i+1):
		p_list.append(S[p])
	for q in range(i+1,N):
		q_list.append(S[q])
	for x in range(0,len(p_list)):
		for y in range(0,len(q_list)):
			if(p_list[x]==q_list[y]):
				icchi.append(p_list[x])
				break
	num.append(len(set(icchi)))
print(max(num))

# Fixed code:
N = int(input())
S = list(map(str,input()))

num=[]
for i in range(0,N-1):
	icchi=[]
	p_list=[]
	q_list=[]
	for p in range(0,i+1):
		p_list.append(S[p])
	for q in range(i+1,N):
		q_list.append(S[q])
	for x in range(0,len(p_list)):
		for y in range(0,len(q_list)):
			if(p_list[x]==q_list[y]):
				icchi.append(p_list[x])
				break
	num.append(len(set(icchi)))
print(max(num))
# Buggy code:
N = int(input())
S = input()

ans = 0
for i in range(N):
  cnt = 0
  X = S[:i]
  Y = S[i + 1:]
  for j in range(i):
    if X[j] in Y:
      cnt += 1
  ans = max(cnt,ans)
print(ans)     

# Fixed code:
N = int(input())
S = input()

ans = 0
for i in range(N):
  cnt = 0
  X = set(S[:i])
  Y = set(S[i:])
  for j in X:
    if j in Y:
      cnt += 1
  ans = max(cnt,ans)
print(ans)
# Buggy code:
n = int(input())
s = list(input())

ans = 0
for i in range(1,n-1):
    ans = max(ans, len(list(set(s[:i]) & set(s[i:]))))
    print(set(s[:i]) & set(s[i:]))
print(ans)

# Fixed code:
n = int(input())
s = input()
ans = 0
for i in range(1, n-1):
    ans = max(ans, len(set(s[:i]) & set(s[i:])))
print(ans)
# Buggy code:
n = int(input())
s = input()

ans = 0

for i in range(n):
    ans = max(ans, len(set[:i] & set[i:]))
print(ans)

# Fixed code:
n=int(input())
s=list(input())
ans=0
for i in range(1,n):
  ans=max(ans,len(set(s[:i])&set(s[i:])))
print(ans)
# Buggy code:
n=int(input())
s=input()
ans=0
for i in range(n):
  x=s[:i]
  y=s[i:]
  X=set(x)
  Y=set(y)
  ans=max(ans,X&Y)
print(ans)

# Fixed code:
n=int(input())
s=input()
ans=0
for i in range(n):
  x=s[:i]
  y=s[i:]
  X=set(list(x))
  Y=set(list(y))
  ans=max(ans,len(X&Y))
print(ans)
# Buggy code:
x=int(input())
ans=1
for i in range(1,x):
    for j in range(2,x):
        if i**j<x:
            ans=max(ans,i**j)
print(ans)

# Fixed code:
x=int(input())
ans=1
for i in range(1,x):
    for j in range(2,x):
        if i**j<=x:
            ans=max(ans,i**j)
        else:break
print(ans)
# Buggy code:
X =int(input())

A = [1]
for i in range(1, 20):
    for j in range(2, 20):
        if i**j <= X:
            A.append(i**j)
print(max(A))

# Fixed code:
X =int(input())

A = [1]
for i in range(1, 50):
    for j in range(2, 50):
        if i**j <= X:
            A.append(i**j)
print(max(A))
# Buggy code:
n=int(input())
m = int(pow(n,1/2)) + 1
k = 0
for i in range(m):
  if n <= pow(i,2):
    break
  if k <= pow(i,2):
    k = pow(i,2)  
  for z in range(3,i):
    if n <= pow(i,z):
      break
    elif k <= pow(i,z):
      k = pow(i,z)
 
print(k)

# Fixed code:
n=int(input())
m = int(pow(n,1/2)) + 1
k = 0
for i in range(n+1):
  if n < pow(i,2):
    break
  if k <= pow(i,2):
    k = pow(i,2)  
  for z in range(3,n):
    if n < pow(i,z):
      break
    elif k <= pow(i,z):
      k = pow(i,z)
 
print(k)
# Buggy code:
import math
x = int(input())

L = []
for i in (2,int(math.floor(math.sqrt(x)))+1):
  for j in (range(x//i)):
    if i ** j <= x:
      L.append(i**j)
      
print(max(L))

# Fixed code:
import math
x = int(input())

L = []
for i in range(2,int(math.floor(math.sqrt(x)))+1):
  for j in range(x//i + 1):
    if i ** j <= x:
      L.append(i ** j)
      
if L == []:
  print("1")
else:
  print(max(L))
# Buggy code:
x = int(input())
ans = 1

for i in range(2, int(x**(0.5))+1):
  j = 2
  while True:
    k = i**j
    if k > x:
      break
    else:
      ans = max(ans, i)
      j += 1
      
print(ans)

# Fixed code:
x = int(input())
ans = 1

for i in range(2, int(x**(0.5))+1):
  j = 2
  while True:
    k = i**j
    if k > x:
      break
    else:
      ans = max(ans, k)
      j += 1
      
print(ans)
# Buggy code:
n = int(input())
ans = 0
for i in range(1,1001):
    for j in range(2,1001):
        if i**j >n:
            break
        if ans < i**j < n:
            ans = i**j
print(ans)    

# Fixed code:
n = int(input())
ans = 1
for i in range(1,1001):
    for j in range(2,1001):
        if i**j > n:
            break
        if ans < i**j <= n:
            ans = i**j
print(ans)
# Buggy code:
def Exponential(x):

    ans = 0
    if x == 1:
        ans = 1
    else:
        for i in range(1, x + 1):
            for w in range(2, x + 1):
                if i ** w <= x:
                    ans = max(ans, i ** w)

    return ans

def main():
    x = int(input())
    print(Exponential(x))

if __name__ == '__main__':
    main()

# Fixed code:
def Exponential(x):

    ans = 0
    if x == 1:
        ans = 1
    else:
        for i in range(1, x + 1):
            for w in range(2, x + 1):
                if i ** w > x:
                    break
                else:
                    ans = max(ans, i ** w)

    return ans

def main():
    x = int(input())
    print(Exponential(x))

if __name__ == '__main__':
    main()
# Buggy code:
X = int(input())

s = []
for i in range(X+1):
    for j in range(2,X+1):
        if i**j <= X and i**j not in s:
            s.append(i**j)
        if i**j > X:
            break
print(max(s)) 

# Fixed code:
X = int(input())

s = [1]
for i in range(X+1):
    for j in range(2,X+1):
        if i**j <= X and i**j not in s:
            s.append(i**j)
        if i**j > X:
            break
print(max(s))
# Buggy code:
x=int(input())
a=[]
for i in range(2,10):
  for j in range(1,32):
    if j**i<=x:a.append(j**i)
print(max(a))​

# Fixed code:
x=int(input())
a=[]
for i in range(2,10):
  for j in range(1,32):
    if j**i<=x:a.append(j**i)
print(max(a))
# Buggy code:
X = int(input())
x = int(X**0.5)
num = []
for b in range(2,x+1) :
    p = 2
    while b**p <= X :
        p += 1
    num.append(b**(p-1))
print(max(num))

# Fixed code:
X = int(input())
x = int(X**0.5)
num = []
if X <= 3 :
    print(1)
else :
    for b in range(2,x+1) :
        p = 2
        while b**p <= X :
            p += 1
        num.append(b**(p-1))
    print(max(num))
# Buggy code:
ni = lambda: int(input())
nm = lambda: map(int, input().split())
nl = lambda: list(map(int, input().split()))

x = ni()

num = 1

for i in range(100):
  for j in range(10):
    if i**j <= x:
      num = i**j

print(num)

# Fixed code:
ni = lambda: int(input())
nm = lambda: map(int, input().split())
nl = lambda: list(map(int, input().split()))

x = ni()

num = 1

for i in range(100):
  for j in range(2,10):
    if i**j <= x:
      num = max(num,i**j)

print(num)
# Buggy code:
X = int(input())
l = []
for i in range(1, int(X ** 0.5) + 1):
  j = 2
  while i ** j <= X:
    j += 1
  l.append(i ** j)
l.sort()
print(l[-1])


# Fixed code:
X = int(input())
l = []
if X < 4:
  print(1)
else:
  for i in range(2, int(X ** 0.5) + 1):
    j = 2
    while i ** j <= X:
      l.append(i ** j)
      j += 1
  l.sort()
  print(l[-1])
# Buggy code:
x=int(input())
res=0
for b in range(x):
    for p in range(2,x):
        if res<(b**p)<=x:
            res=b**p
        elif b**p>x:
            break
print(res)



# Fixed code:
x=int(input())
res=0
for b in range(x+1):
    for p in range(2,x+2):
        if res<(b**p)<=x:
            res=b**p
        elif b**p>x:
            break
print(res)
# Buggy code:
N = int(input())
ans = 0
if N ==1:
  print(1)
else:
  for i in range(int(N**0.5)+1):
    for j in range(100):
      if i**j<=N:
        ans =max(ans,i**j)
      else:
        break
print(ans)
    

# Fixed code:
N = int(input())
ans = 0
if N ==1:
  print(1)
  exit()
else:
  for i in range(int(N**0.5)+1):
    for j in range(100):
      if i**j<=N:
        ans =max(ans,i**j)
      else:
        break
print(ans)
# Buggy code:
x = int(input())
max = 0
if x == 1:
    print(1)
    exit()
for b in range(2, 1000):
    for p in range(10):
        if b**p <= x:
            if b**p >= max:
                max = b**p
print(max)

# Fixed code:
x = int(input())
max = 0
if x == 1:
    print(1)
    exit()
for b in range(1, 1001):
    for p in range(2, 10):
        if b**p <= x:
            if b**p >= max:
                max = b**p
print(max)
# Buggy code:
X = int(input())

max_v = 1

for i in range(2, X+1):
    for j in range(2, X+1):
        if i ** j <= X:
            max_v = max(max_v, i ** j)
print(max_v)



# Fixed code:
X = int(input())

max_v = 1

for i in range(2, X+1):
    for j in range(2, X+1):
        if i ** j <= X:
            max_v = max(max_v, i ** j)
        else:
            break
print(max_v)
# Buggy code:
X = int(input())
ans = 0

for i in range(1, X):
  for j in range(2, X):
    num = i ** j
    if num >= X:
      break
    ans = num

print(ans)

# Fixed code:
X = int(input())
ans = 1

for i in range(1, X+1):
  for j in range(2, X+1):
    num = i ** j
    if num > X:
      break
    if num >= ans: 
      ans = num

print(ans)
# Buggy code:
from math import log
x = int(input())
lx = log(x)
ans = 1
for b in range(2, int(b**(1/2))+1):
    h = int(lx/log(b))
    if b**h > ans: ans = b**h

print(ans)


# Fixed code:
from math import log
x = int(input())
lx = log(x)
ans = 1
for b in range(2, int(x**(1/2))+1):
    h = b
    while h*b <= x:
        h *= b
    if h > ans: ans = h

print(ans)
# Buggy code:
import math
def main():
    X = int(input())
    ma = 1
    for b in range(2, X):
        for p in range(2, X):
            if b**p <= X:
                if ma < b**p:
                    ma = b**p
    print(ma)  
main()

# Fixed code:
import math
def main():
    X = int(input())
    ma = 1
    for b in range(2, X):
        for p in range(2, X):
            if b**p <= X:
                if ma < b**p:
                    ma = b**p
            else:
                break
    print(ma)  
main()
# Buggy code:
# coding: utf-8
# Your code here!
x=int(input())
ans=[]
for i in range(1,x+1):
    for j in range(2,x+1):
        if i**j<=x:
            ans.append(i**j)
        else:
            break
ans.sort(reverse=True)
print(ans[0])
#print(ans)

# Fixed code:
# coding: utf-8
# Your code here!
x=int(input())
ans=[]
if x==1:
    print(1)
else:
    for i in range(1,x+1):
        for j in range(2,x+1):
            if i**j<=x:
                ans.append(i**j)
            else:
                break
    ans.sort(reverse=True)
    print(ans[0])
#print(ans)
# Buggy code:
import sys

X = int(input())
array = []
for i in range(2, 11):
    for j in range(1, 33):
        if pow(j, i) > X:
            break
        else:
            array.append(pow(i, j))
        
print(min(array))

# Fixed code:
import sys

X = int(input())
array = []
for i in range(2, 11):
    for j in range(1, 33):
        if pow(j, i) > X:
            break
        else:
            array.append(pow(j, i))
        
print(max(array))
# Buggy code:
from math import sqrt
x = int(input())
cnt = 0
l = []
for i in range(1, x + 1):
    for j in range(1, int(sqrt(i)) +1):
        for k in range(2, i):
            if j ** k == i:
                l.append(i)
print(max(l))

# Fixed code:
from math import sqrt
x = int(input())
cnt = 0
l = []
for i in range(1, x + 1):
    for j in range(1, int(sqrt(i)) +1):
        for k in range(2, 10):
            if j ** k == i:
                l.append(i)
print(max(l))
# Buggy code:
x = int(input())
if x < 4:
  print(1)
  exit()
import math
for i in range(2,x):
  if math.floor(math.log(x,i))>1:
    result = max(result, i ** math.floor(math.log(x,i)))
print(result)

# Fixed code:
x = int(input())
if x < 4:
  print(1)
  exit()
import math
result = 1
for i in range(2,x+1):
  if math.floor(math.log(x,i)+1/100000) > 1:
    result = max(result, i ** math.floor(math.log(x,i)+1/100000))
  
print(result)
# Buggy code:
a = int(input())
res = 0
for i in range(1,1000):
  for j in range(2,10):
    if res>i**j and i**j<=a:
      res=i**j
print(res)

# Fixed code:
a=int(input())

res=0

for i in range(1,1000):
    for j in range(2,10):
        if res<i**j and i**j<=a:
            res=i**j

print(res)
# Buggy code:
X=int(input())
n=1
for b in range(2,X):
   p=2
   while(True):
      x=b**p
      print(x)
      if x<=X:
         n=x
         p+=1
      else:
         break
   
print(n)

# Fixed code:
X=int(input())
n=1
for b in range(2,X):
   p=2
   while(True):
      x=b**p
      if x<=X:
         n=max(x,n)
         p+=1
      else:
         break
   
print(n)
# Buggy code:
x = int(input())
ans = 1
for i in range(100):
    for j in range(100):
        if x < i**j: break
        else: ans = max(ans, i**j)
print(ans)

# Fixed code:
x = int(input())
ans = 1
for i in range(x):
    for j in range(2, x):
        if x < i**j: break
        else: ans = max(ans, i**j)
print(ans)
# Buggy code:
x = int(input())
set_x = set(n**e for n in range(32) for e in range(2, 11) if n**e <= X)
ans = max(set_x)
print(ans)

# Fixed code:
x = int(input())
set_x = set(n**e for n in range(32) for e in range(2, 11) if n**e <= x)
ans = max(set_x)
print(ans)
# Buggy code:
from collections import defaultdict
import sys,heapq,bisect,math,itertools,string,queue,datetime
sys.setrecursionlimit(10**8)
INF = float('inf')
mod = 10**9+7
eps = 10**-7
AtoZ = [chr(i) for i in range(65,65+26)]
atoz = [chr(i) for i in range(97,97+26)]

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

li = []

for i in range(2,33):
	SUM = i
	while SUM <= 1000:
		SUM *= i
		li.append(SUM)

li = list(set(li))
li.sort()

N = int(input())
ind = bisect.bisect_left(li,N)
print(li[ind-1])

# Fixed code:
from collections import defaultdict
import sys,heapq,bisect,math,itertools,string,queue,datetime
sys.setrecursionlimit(10**8)
INF = float('inf')
mod = 10**9+7
eps = 10**-7
AtoZ = [chr(i) for i in range(65,65+26)]
atoz = [chr(i) for i in range(97,97+26)]

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

li = [1]

for i in range(2,33):
	SUM = i
	while SUM <= 1000:
		SUM *= i
		li.append(SUM)

li = list(set(li))
li.sort()

N = int(input())
ind = bisect.bisect_right(li,N)
print(li[ind-1])
# Buggy code:
X = int(input())
c = 1
for b in range(1,X+1):
  for p in range(2,X+1):
    if b**p <= X: c=max(c,b**p)
print(c)

# Fixed code:
X = int(input())
c = 1
for b in range(1,X+1):
  for p in range(2,X):
    if b**p <= X:c=max(c,b**p)
    else:break
print(c)
# Buggy code:
import math

x = int(input())
ans = [1]
s = math.sqrt(x)
if s >= 2:
    for i in range(2,s+1):
        temp = i
        while True:
            temp *= i
            if temp <= n:
                ans.append(temp)
            else:
                break

print(max(ans))

# Fixed code:
import math

x = int(input())
ans = [1]
s = int(math.sqrt(x))
if s >= 2:
    for i in range(2,s+1):
        temp = i
        while True:
            temp *= i
            if temp <= x:
                ans.append(temp)
            else:
                break

print(max(ans))
# Buggy code:
n=int(input())
a1=list(map(lambda x: int(x), input().split()))
a2=list(map(lambda x: int(x), input().split()))

ans=a1[0]+sum(a2)
for i in range(n-1):
    ans=max(ans, ans+a1[i+1]-a2[i])
print(ans)

# Fixed code:
n=int(input())
a1=list(map(lambda x: int(x), input().split()))
a2=list(map(lambda x: int(x), input().split()))

tmp=a1[0]+sum(a2)
ans=tmp
for i in range(n-1):
    tmp=tmp+a1[i+1]-a2[i]
    ans=max(ans,tmp)
print(ans)
# Buggy code:
n  = int(input())

a = list(map(int,input().split()))
b = list(map(int,input().split()))
ans = []
for i in range(n):
  ans.append(sum(a[0:i+1] + sum(b[i:n]))

print(max(ans))

# Fixed code:
n = int(input())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
ans = 0
for i in range(n):
  ans = max(ans,sum(a[:i+1])+sum(b[i:]))
print(ans)
# Buggy code:
import sys
from math import sqrt
from collections import Counter

input = sys.stdin.readline


def I():
    return int(sys.stdin.readline())


def MI():
    return map(int, sys.stdin.readline().split())


inf = float("inf")
mod = 10 ** 9 + 7


def main():
    n = I()
    a1 = MI()
    a2 = MI()

    max = 0
    for i in range(n):
        candy = sum(a1[0:i]) + sum(a2[i:n])
        if candy > max:
            max = candy
    print(max)
    pass


if __name__ == "__main__":
    main()


# Fixed code:
import sys
from math import sqrt
from collections import Counter

input = sys.stdin.readline


def I():
    return int(sys.stdin.readline())


def MI():
    return map(int, sys.stdin.readline().split())


def LI():
    return list(MI())


inf = float("inf")
mod = 10 ** 9 + 7


def main():
    n = I()
    a1 = LI()
    a2 = LI()

    max = 0
    for i in range(n):
        candy = sum(a1[0 : i + 1]) + sum(a2[i:n])
        if candy > max:
            max = candy
    print(max)
    pass


if __name__ == "__main__":
    main()
# Buggy code:
N = int(input())
A = list(map(int,input().split()))
A2 = list(map(int,input().split()))
total = A[0] + sum(A2)
total2 = [total]
p = 0
if N > 1:
    for i in range(N-1) :
        total = total + A[i+1] - A2[i]
        total2.append(total)
    print(max(total2))
    print(total2)
else:
    print(total)

# Fixed code:
N = int(input())
A = list(map(int,input().split()))
A2 = list(map(int,input().split()))
total = A[0] + sum(A2)
total2 = [total]
p = 0
if N > 1:
    for i in range(N-1) :
        total = total + A[i+1] - A2[i]
        total2.append(total)
    print(max(total2))
else:
    print(total)
# Buggy code:
n = int(input())
a = str(input()).split()
b = str(input()).split()
c = [a,b]
d = [a,b]
def max(x,y):
    if x > y:
    return x
    else:
    return y 
for j in range(0,2):
    for k in range(0,n):
        if j == 0 and k == 0:
            d[j][k] = int(c[j][k])
        elif j  == 0:
            d[j][k] = d[j][k-1] + int(c[j][k])
        elif k == 0:
            d[j][k] = d[j-1][k] + int(c[j][k])
        else:
            d[j][k] = max(d[j][k-1],d[j-1][k]) + int(c[j][k])
print(d[1][n-1])

   

# Fixed code:
n = int(input())
a = str(input()).split()
b = str(input()).split()
c = [a,b]
d = [a,b]
def max(x,y):
    if x > y:
        return x
    else:
        return y 
for j in range(0,2):
    for k in range(0,n):
        if j == 0 and k == 0:
            d[j][k] = int(c[j][k])
        elif j  == 0:
            d[j][k] = d[j][k-1] + int(c[j][k])
        elif k == 0:
            d[j][k] = d[j-1][k] + int(c[j][k])
        else:
            d[j][k] = max(d[j][k-1],d[j-1][k]) + int(c[j][k])
print(d[1][n-1])
# Buggy code:
# dp
N = int(input())
A = [list(map(int, input().split())) for _ in range(2)]

dp = [[0]*(N) for _ in range(N)]
dp[0][0] = A[0][0]
dp[1][0] = A[0][0] + A[1][0]
for i in range(1, N):
  dp[0][i] = dp[0][i-1] + A[0][i]
  dp[1][i] = max(dp[0][i],dp[1][i-1]) + A[1][i]
  
print(dp[1][-1])  

# Fixed code:
# dp
N = int(input())
A = [list(map(int, input().split())) for _ in range(2)]
dp = [[0]*(N) for _ in range(2)]

dp[0][0] = A[0][0]
dp[1][0] = A[0][0] + A[1][0]
for i in range(1, N):
  dp[0][i] = dp[0][i-1] + A[0][i]
  dp[1][i] = max(dp[0][i],dp[1][i-1]) + A[1][i]
  
print(dp[1][-1])