qyliang/CodeNanoFix huggingface dataset:
Buggy code:
from collections import Counter

N = int(input())

strings = [input() for i i in range(N)]

string_set = list(map(set,strings))
count_set = list(map(Counter, strings))

common_letter = string_set[0]

for s in string_set:
    common_letter = common_letter & s

common_letter_nums = {}

for l in common_letter:
    common_letter_nums.setdefault(l, [])
    for c in count_set:
        common_letter_nums[l].append(c[l])

output_letter = ''
for k, v in common_letter_nums.items():
    output_letter += k * min(v)

print(''.join(sorted(output_letter)))

Fixed code:
from collections import Counter

N = int(input())

strings = [input() for i in range(N)]

string_set = list(map(set,strings))
count_set = list(map(Counter, strings))

common_letter = string_set[0]

for s in string_set:
    common_letter = common_letter & s

common_letter_nums = {}

for l in common_letter:
    common_letter_nums.setdefault(l, [])
    for c in count_set:
        common_letter_nums[l].append(c[l])

output_letter = ''
for k, v in common_letter_nums.items():
    output_letter += k * min(v)

print(''.join(sorted(output_letter)))
Buggy code:
N = int(input())
S = []
for i in range(N):
    S.append(input())
queue = []
S0len = len(S[0])

for j in range(S0len):
    flag = [0 for m in range(N-1)]
    for k in range(1,N):
        if S[0][j] in S[k]:
            flag[k] = 1
            
    if sum(flag) == N-1:
        queue.append(S[0][j])

queue = sorted(queue)
res = "".join(queue)
        
print(res)

Fixed code:
N = int(input())
S = []
for i in range(N):
    S.append(list(input()))
queue = []
len = len(S[0])

for j in range(len):
    flag = [0 for m in range(N)]
    for k in range(1,N):
        if S[0][j] in S[k]:
            flag[k] = 1
            S[k].remove(S[0][j])
            
    if sum(flag) == N-1:
        queue.append(S[0][j])

queue = sorted(queue)
res = "".join(queue)
        
print(res)
Buggy code:
mport collections
n = int(input())

d = collections.Counter(input())
for i in range(n - 1):
    words = collections.Counter(input())
    for w in words.keys():
        d[w] = min(words[w], d[w])
        
    for w in d.keys():
        d[w] = min(words[w], d[w])

ans = []
for char in d.keys():
    for i in range(d[char]):
        ans.append(char)

ans.sort()

print(''.join(ans))

Fixed code:
import collections
n = int(input())

d = collections.Counter(input())
for i in range(n - 1):
    words = collections.Counter(input())
    for w in words.keys():
        d[w] = min(words[w], d[w])
        
    for w in d.keys():
        d[w] = min(words[w], d[w])

ans = []
for char in d.keys():
    for i in range(d[char]):
        ans.append(char)

ans.sort()

print(''.join(ans))
Buggy code:
from collections import Counter
n = int(input())
S = [input() for _ in range(n)]

ans = Counter(S[0])
for i in range(1,n):
  tmp = Counter(S[i])
  for a in ans.keys():
    if a in tmp:
      ans[a] = min(ans[a],tmp[a])
    else:
      ans[a] = 0
x = ''
for a in ans.items():
  x += a[0]*a[1]
print(x)

Fixed code:
from collections import Counter
n = int(input())
S = [input() for _ in range(n)]

ans = Counter(S[0])
for i in range(1,n):
  tmp = Counter(S[i])
  for a in ans.keys():
    if a in tmp:
      ans[a] = min(ans[a],tmp[a])
    else:
      ans[a] = 0
x = ''
for a in ans.items():
  x += a[0]*a[1]
print(''.join(sorted(x)))
Buggy code:
n = int(input())
list_1 = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
dic = {}
for al in list_1:
  dic[al] = 100
for i in range(n):
  s = input()
  for al in list_1:
    count
    for t in s:
      if al == t:
        count += 1
    if dic[al] > count:
      dic[al] = count
ans = ''
for al in list_1:
  if dic[al] > 0:
    for i in range(dic[al]):
      ans += al
print(ans)

Fixed code:
n = int(input())
list_1 = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
dic = {}
for al in list_1:
  dic[al] = 100
for i in range(n):
  s = input()
  for al in list_1:
    count = 0
    for t in s:
      if al == t:
        count += 1
    if dic[al] > count:
      dic[al] = count
ans = ''
for al in list_1:
  if dic[al] > 0:
    for i in range(dic[al]):
      ans += al
print(ans)
Buggy code:
def resolve():
    '''
    code here
    '''

    import collections
    N = int(input())
    S_list = [collections.Counter(input()) for _ in range(N)]

    abcd_list = string.ascii_lowercase
    cnt_dict = S_list[0]

    for line in S_list:
        for item in cnt_dict.keys():
            cnt_dict[item] = min(line[item], cnt_dict[item])
        prev_dict = cnt_dict
        # print(cnt_dict)
    
    cnt_tuple = sorted(cnt_dict.items())
    # print(cnt_tuple)
    res = ''
    for i, v in cnt_tuple:
        if v > 0:
            res += i*v

    print(res)

if __name__ == "__main__":
    resolve()    



Fixed code:
def resolve():
    '''
    code here
    '''

    import collections
    N = int(input())
    S_list = [collections.Counter(input()) for _ in range(N)]

    cnt_dict = S_list[0]

    for line in S_list:
        for item in cnt_dict.keys():
            cnt_dict[item] = min(line[item], cnt_dict[item])
        prev_dict = cnt_dict
        # print(cnt_dict)
    
    cnt_tuple = sorted(cnt_dict.items())
    # print(cnt_tuple)
    res = ''
    for i, v in cnt_tuple:
        if v > 0:
            res += i*v

    print(res)

if __name__ == "__main__":
    resolve()
Buggy code:
from collections import Counter
from functools import reduce
n, *S = open(0).read().split()
keys = reduce(and_, map(set, S))
d = {c:10**6 for c in keys}
for counter in map(Counter, S):
    for c in keys:
        if c in counter:
            d[c] = min(d[c], counter[c])
ans = ''
for k, v in sorted(d.items()):
    ans += k * v
print(ans)

Fixed code:
from collections import Counter
from functools import reduce
from operator import and_
n, *S = open(0).read().split()
keys = reduce(and_, map(set, S))
d = {c:10**6 for c in keys}
for counter in map(Counter, S):
    for c in keys:
        if c in counter:
            d[c] = min(d[c], counter[c])
ans = ''
for k, v in sorted(d.items()):
    ans += k * v
print(ans)
Buggy code:
import collections
n = int(input())
s = [[] for _ in range(n)]
l = [collections.defaultdict(lambda:0) for _ in range(n)]
for i in range(n):
    s[i] = list(input())
    for j in s[i]:
        l[i][j] += 1
    print(l)
mind = [float("inf")]*26
for i in range(26):
    for j in range(n):
        mind[i] = min(mind[i],l[j][chr(97+i)])
ans = ""
for i in range(26):
    ans += chr(97+i)*mind[i]
print(ans)

Fixed code:
import collections
n = int(input())
s = [[] for _ in range(n)]
l = [collections.defaultdict(lambda:0) for _ in range(n)]
for i in range(n):
    s[i] = list(input())
    for j in s[i]:
        l[i][j] += 1
mind = [float("inf")]*26
for i in range(26):
    for j in range(n):
        mind[i] = min(mind[i],l[j][chr(97+i)])
ans = ""
for i in range(26):
    ans += chr(97+i)*mind[i]
print(ans)
Buggy code:
n = int(input())

s = []
for i in range(n):
    s.append(input())

ans = ""

for i in range(len(s[0])):
    check = 0
    for j in range(n):
        if not s[0][i] in s[j+1]:
            check = 1
    if check == 0:
        ans = ans + s[0][i]

ans = ''.join(sorted(ans))
print(ans)

Fixed code:
n = int(input())

s = []
for i in range(n):
    s.append(input())

ans = ""

for i in range(len(s[0])):
    check = 0
    for j in range(n):
        if not s[0][i] in s[j]:
            check = 1
    if check == 0:
        ans = ans + s[0][i]
        for j in range(1,n):
            re = s[0][i]
            s[j] = s[j].replace(re , '', 1)

ans = ''.join(sorted(ans))
print(ans)
Buggy code:
from string import ascii_lowercase

n = int(input())
strings = [input() for _ in range(n)]
alphabets = [a for a in ascii_lowercase]

counts = []
for a in alphabets:
    for i in range(n):
        count = strings[i].count(a)
        if count == 0:
            counts.append((a, 0))
            break
        if i == 0:
            m = count
            continue
        m = min(m, count)
    else:
        counts.append((a, m))
print(counts)

ans = ''
for count in counts:
    ans += count[0] * count[1]

print(ans)


Fixed code:
from string import ascii_lowercase

n = int(input())
strings = [input() for _ in range(n)]
alphabets = [a for a in ascii_lowercase]

counts = []
for a in alphabets:
    for i in range(n):
        count = strings[i].count(a)
        if count == 0:
            break
        if i == 0:
            m = count
            continue
        m = min(m, count)
    else:
        counts.append((a, m))

ans = ''
for count in counts:
    ans += count[0] * count[1]

print(ans)
Buggy code:
alpha = "abcdefghijklmnopqrstuvwxyz"
N = int(input())
L = []
for _ in range(N):
    L.append(input())
for char in alpha:
    minimum = 10 ** 10
    cnt = 0
    for string in L:
        for s in string:
            if s == char:
                cnt += 1
        minimum = min(cnt,minimum)
    print(alpha*minimum,end = '')
print()


Fixed code:
alpha = "abcdefghijklmnopqrstuvwxyz"
N = int(input())
L = []
for _ in range(N):
    L.append(input())
for char in alpha:
    minimum = 10 ** 10
    for string in L:
        cnt = 0
        for s in string:
            if s == char:
                cnt += 1
        minimum = min(cnt,minimum)
    print(char*minimum,end = '')
print()
Buggy code:
from collections import Counter

n = int(input())
keys = set()
S = []
ans = {}
for i in range(n):
    counter = Counter(input())
    keys = keys.intersection(counter.keys())
    for k in keys:
        ans[k] = min(ans.get(k, 100), counter[k])

s = ''
for k in ans.keys():
    s += k * ans[k]
s = sorted(s)
sa = ''
for i in s:
    sa += i
print (sa)

Fixed code:
from collections import Counter

n = int(input())
keys = set()
S = []
ans = {}
for i in range(n):
    counter = Counter(input())
    if i == 0:
        keys = set(counter.keys())
    else:
        keys = keys.intersection(counter.keys())
    tmp = {}
    for k in keys:
        tmp[k] = min(ans.get(k, 100), counter[k])
    ans = tmp
        
s = ''
for k in ans.keys():
    s += k * ans[k]
s = sorted(s)
sa = ''
for i in s:
    sa += i
print (sa)
Buggy code:
n=int(input())
d=dict()
for i in input():
  if i not in d:
    d[i]=1
  else:
    d[i]+=1
for _ in range(n-1):
  dd=dict()
  for i in input():
    if i not in dd:
      dd[i]=1
    else:
      dd[i]+=1
  for i in d.keys():
    if i in dd:
      d[i]=min(d[i],dd[i])
ans=[]
for i in d.keys():
  for _ in range(d[i]):
    ans.append(i)
ans.sort()
a=""
for i in ans:
  a+=i
print(a)


Fixed code:
n=int(input())
d=dict()
for i in input():
  if i not in d:
    d[i]=1
  else:
    d[i]+=1
for _ in range(n-1):
  dd=dict()
  for i in input():
    if i not in dd:
      dd[i]=1
    else:
      dd[i]+=1
  for i in d.keys():
    if i in dd:
      d[i]=min(d[i],dd[i])
    else:
      d[i]=0
ans=[]
for i in d.keys():
  for _ in range(d[i]):
    ans.append(i)
ans.sort()
a=""
for i in ans:
  a+=i
print(a)
Buggy code:
n = int(input())
s = []
for i in range(n):
    s.append(input())
alp = "abcdefghijklmnopqrstuvwxyz"
ans = ""
for a in alp:
    cnt = 0
    for ss in s:
        cnt = min(cnt,ss.count(a))
    for i in range(cnt):
        ans += a
print(ans)


Fixed code:
n = int(input())
s = []
for i in range(n):
    s.append(input())
alp = "abcdefghijklmnopqrstuvwxyz"
ans = ""
for a in alp:
    cnt = 1e10
    for ss in s:
        cnt = min(cnt,ss.count(a))
    for i in range(cnt):
        ans += a
print(ans)
Buggy code:
from collections import Counter
n = int(input())
x = []
for i in range(n):
    s = input()
    t = Counter(s)
    x.append(t)
ans = ""
for i in "abcdefghijklmnopqrstuvwxyz":
    tmp = []
    for j in x:
        tmp.append(j[i])
        print(tmp)
    ans += i*min(tmp)
print(ans)

Fixed code:
from collections import Counter
n = int(input())
x = []
for i in range(n):
    s = input()
    t = Counter(s)
    x.append(t)
ans = ""
for i in "abcdefghijklmnopqrstuvwxyz":
    tmp = []
    for j in x:
        tmp.append(j[i])
    ans += i*min(tmp)
print(ans)
Buggy code:
from collections import Counter
n=int(input())
w=Counter(input())
for i in range(n-1):
    w &=Counter(input())
ans=""
for i,j in w.items():
    ans +=i*j
print(ans)

Fixed code:
from collections import Counter
n=int(input())
w=Counter(input())
for i in range(n-1):
    w &=Counter(input())
ans=""
for i,j in sorted(w.items()):
    ans +=i*j
print(ans)
Buggy code:
from collections import Counter
n=int(input())
s=[input() for i in range(n)]
count=Counter(s[0])
for i in range(n):
    count &=s[i]

ans=""
for i in sorted(count.keys()):
    ans +=i*count[i]
print(ans)

Fixed code:
from collections import Counter
n=int(input())
s=[input() for i in range(n)]
count=Counter(s[0])
for i in range(n):
    count &=Counter(s[i])

ans=""
for i in sorted(count.keys()):
    ans +=i*count[i]
print(ans)
Buggy code:
from collections import Counter

n=int(input())
c=Counter(input())
for i in range(n-1):
    c&=Counter(input())
s=''
for k,v in sorted(count.items()):
    s+=k*v
print(s)

Fixed code:
from collections import Counter

n=int(input())
count=Counter(input())
for i in range(n-1):
    count&=Counter(input())
s=''
for k,v in sorted(count.items()):
    s+=k*v
print(s)
Buggy code:
n=int(input())
h = [input() for d in range (n)]
alphabet=['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']
list=[]


for k in range(26):
    for i in range (n):
         m=50
         x =h[i].count(alphabet[k])
         m =min(x,m)
         print(m)
    list.append(alphabet[k]*m)

print(list)



Fixed code:
n=int(input())
h = [input() for d in range (n)]
alphabet=['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z']
list=[]


for k in range(26):
    m=50
    for i in range (n):
         x =h[i].count(alphabet[k])
         m =min(x,m)
    list.append(alphabet[k]*m)

print(''.join(list))
Buggy code:
from collections import Counter
N = int(input())
S=[]

for n in range(N):
    S.append(Counter(list(input())))

S_=dict(S[0])
for s in S:
    if len(S_) > len(s):
        S_=dict(s)

for s in S:
    for s_ in S_.keys():
        S_[s_]=min(s[s_],S_[s_])

S_key=list(S_.keys())
S_key.sort()

ans=''
for k in S_key:
    ans += k*S_[k]
ans

Fixed code:
from collections import Counter
N = int(input())
S=[]

for n in range(N):
    S.append(Counter(list(input())))

S_=dict(S[0])
for s in S:
    if len(S_) > len(s):
        S_=dict(s)

for s in S:
    for s_ in S_.keys():
        S_[s_]=min(s[s_],S_[s_])

S_key=list(S_.keys())
S_key.sort()

ans=''
for k in S_key:
    ans += k*S_[k]
print(ans)
Buggy code:
n = int(input())
s_counted = Counter(input())

for i in range(n - 1):
    si_counted = Counter(input())
    for j in s_counted:
        if j in si_counted:
            s_counted[j] = min(s_counted[j], si_counted[j])

        else:
            s_counted[j] = 0

ans = ""
for i in sorted(s_counted.most_common()):
    ans += i[1] * i[0]

print(ans)

Fixed code:
from collections import *

n = int(input())
s_counted = Counter(input())

for i in range(n - 1):
    si_counted = Counter(input())
    for j in s_counted:
        if j in si_counted:
            s_counted[j] = min(s_counted[j], si_counted[j])

        else:
            s_counted[j] = 0

ans = ""
for i in sorted(s_counted.most_common()):
    ans += i[1] * i[0]

print(ans)
Buggy code:
n = int(input())
S = []
ans = ''
for i in range(n):
	s = list(input())
	S.append(s)


S[0].sort()

for i in range(len(S[0])):
	if n == 1:
		ans = ''.join(S[0])
        break
	a = S[0][i]
	l = 0
	for j in range(n - 1):
		if a in S[j + 1]:
			S[j + 1].remove(a)
			l += 1
		if l == n - 1:
			ans += a


print(ans)

Fixed code:
n = int(input())
S = []
ans = ''
for i in range(n):
	s = list(input())
	S.append(s)


S[0].sort()

for i in range(len(S[0])):
	if n == 1:
		ans = ''.join(S[0])
	a = S[0][i]
	l = 0
	for j in range(n - 1):
		if a in S[j + 1]:
			S[j + 1].remove(a)
			l += 1
		if l == n - 1:
			ans += a


print(ans)
Buggy code:
from collections import Counter
N=int(input())
S=Counter(list(input()))

for i in range(1,N):
  S_=Counter(list(input()))
  for s in S:
    if S_[s]<S[s]:
      S[s]=S_[s]

ans=[]
for s in S:
  for _ in range(S[s]):
    ans.append(s)
print("".join(sorted(ans))

Fixed code:
from collections import Counter
N=int(input())
S=Counter(list(input()))

for i in range(1,N):
  S_=Counter(list(input()))
  for s in S:
    if S_[s]<S[s]:
      S[s]=S_[s]

ans=[]
for s in S:
  for _ in range(S[s]):
    ans.append(s)
print("".join(sorted(ans)))
Buggy code:
import sys
n = int(input())
kind = set(list("abcdefghijklmnopqrstuvwxyz"))
S = str(input(n))
kind = set(S)
dic = {}
for k in kind:
    dic[k] = S.count(k)

for i in range(n-1):
    S = str(input())
    kind = set(S) & kind
    for k in kind:
        dic[k] = min(S.count(k),dic[k])
    if i == n-2:
        alp = sorted(list(kind))
        ans = ""
        for a in alp:
            ans += a*dic[a]
        print(ans)


Fixed code:
import sys
n = int(input())
kind = set(list("abcdefghijklmnopqrstuvwxyz"))
S = str(input())
kind = set(S)
dic = {}
for k in kind:
    dic[k] = S.count(k)

for i in range(n-1):
    S = str(input())
    kind = set(S) & kind
    for k in kind:
        dic[k] = min(S.count(k),dic[k])

kind = sorted(list(kind))
ans = ""
for a in kind:
    ans += a*dic[a]
print(ans)
Buggy code:
import copy

n = int(input())
S = list([list(input()) for _ in range(n)])

strlist=[]

B=copy.deepcopy(S)

for s1 in S:
    print(s1)
    for moji in s1:
        c=False
        for s2 in B:
            if moji not in s2:
                c=False
                break
            else: c=True
        if c:
            strlist.append(moji)
            [B[i].remove(moji) for i in range(n)]
strlist.sort()
print(''.join(strlist))
            

Fixed code:
import copy

n = int(input())
S = list([list(input()) for _ in range(n)])

strlist=[]

B=copy.deepcopy(S)

for s1 in S:
    for moji in s1:
        c=False
        for s2 in B:
            if moji not in s2:
                c=False
                break
            else: c=True
        if c:
            strlist.append(moji)
            [B[i].remove(moji) for i in range(n)]
strlist.sort()
print(''.join(strlist))
Buggy code:
N = int(input())
S_list = []
min_length = 10000
for _ in range(N):
    st = input()
    S_list.append(st)
    min_length = min(min_length, len(st))
char_list = list("abcdefghijklmnopqrstuvwxyz")
total_counter = {char: 1e4 for char in char_list}
for i in range(N):
    string = S_list[i]
    for char in char_list:
        total_counter[char] = min(total_counter[char], string.count(char))


ans = ""
print(total_counter)
for char, count in total_counter.items():
    ans += char*count
    
print(ans)

Fixed code:
N = int(input())
S_list = []
min_length = 10000
for _ in range(N):
    st = input()
    S_list.append(st)
    min_length = min(min_length, len(st))
char_list = list("abcdefghijklmnopqrstuvwxyz")
total_counter = {char: 1e4 for char in char_list}
for i in range(N):
    string = S_list[i]
    for char in char_list:
        total_counter[char] = min(total_counter[char], string.count(char))


ans = ""

for char, count in total_counter.items():
    ans += char*count
    
print(ans)
Buggy code:
# -*- coding: UTF-8 -*-
N = int(input())
d = list(map(int,input().split(" ")))
d.sort(reverse = True)
_ans = []
for i in range(N-1):
    _ans.append(d[2*i+1])
print(sum(_ans))


Fixed code:
# -*- coding: UTF-8 -*-
N = int(input())
d = list(map(int,input().split(" ")))
d.sort(reverse = True)
_ans = []
for i in range(N):
    _ans.append(d[2*i+1])
print(sum(_ans))
Buggy code:
def slove():
    import sys
    input = sys.stdin.readline
    n = int(input().rstrip('\n'))
    a = list(map(int, input().rstrip('\n').split()))
    a.sort(reverse=True)
    print(a)
    print(a[1:2*n+1:2])
    print(sum(a[1:2*n+1:2]))


if __name__ == '__main__':
    slove()


Fixed code:
def slove():
    import sys
    input = sys.stdin.readline
    n = int(input().rstrip('\n'))
    a = list(map(int, input().rstrip('\n').split()))
    a.sort(reverse=True)
    print(sum(a[1:2*n+1:2]))


if __name__ == '__main__':
    slove()
Buggy code:
N=int(input())
a=sorted(list(map(int,input().split())))
print(sum(a[2::2]))

Fixed code:
N=int(input())
a=sorted(list(map(int,input().split())))
print(sum(a[N::2]))
Buggy code:
n = int(input())
a = list(map(int,input().split()))
print(sum(sorted(a,reverse=True)[:n*2:2]))

Fixed code:
n = int(input())
a = list(map(int,input().split()))
print(sum(sorted(a,reverse=True)[1:n*2:2]))
Buggy code:
if __name__ == '__main__':
    n = int(input())
    alist = [int(i) for i in input().split()]
    alist.sort(reverse=True)
    print(alist)
    st = 0
    for i in range(n):
        st += alist[2*i+1]
    print(st)


Fixed code:
if __name__ == '__main__':
    n = int(input())
    alist = [int(i) for i in input().split()]
    alist.sort(reverse=True)
    st = 0
    for i in range(n):
        st += alist[2*i+1]
    print(st)
Buggy code:
n=int(input())
*a,=map(int,input().split())
a.sort()
a.reverse()
ans=0
for i in range(2,n,3):
  ans+=a[i]
print(ans)

Fixed code:
n=int(input())
*a,=map(int,input().split())
a.sort()
a.reverse()
ans=0
for i in range(n):
  ans+=a[i*2+1]
print(ans)
Buggy code:
N=int(input())
a=sorted(map(int,input().split()))
print(*a)
ans=0
left=0;right=3*N-1
for i in range(N):
    print(left,right)
    mid=right-1
    ans+=a[mid]
    right=mid-1
    left+=1
print(ans)

Fixed code:
N=int(input())
a=sorted(map(int,input().split()))
ans=0
left=0;right=3*N-1
for i in range(N):
    mid=right-1
    ans+=a[mid]
    right=mid-1
    left+=1
print(ans)
Buggy code:
#!/usr/bin/python
import numpy as np

N = int(input())
a = list(map(int, input().split()))

a = np.array(sorted(a)[N:])
print (a.reshape(2, -1).sum(axis=0)[0])


Fixed code:
#!/usr/bin/python
import numpy as np

N = int(input())
a = list(map(int, input().split()))

a = np.array(sorted(a)[N:])
print (a.reshape(-1, 2).sum(axis=0)[0])
Buggy code:
N = int(input())
A = list(map(int, input().split()))
A.sort(reverse=True)
print(A)
sum=0
for i in range(2*N):
    if i%2==1:
        sum+=A[i]

print(sum)


Fixed code:
N = int(input())
A = list(map(int, input().split()))
A.sort(reverse=True)
sum=0
for i in range(2*N):
    if i%2==1:
        sum+=A[i]

print(sum)
Buggy code:
N = int(input())
A = list(map(int,input().split()))
A.sort(reverse=True)
ans = 0
for i in range(N):
    li = [A[2*i],A[2*i+1],A[3*N+i-2]]
    ans += li[1]
print(ans)

Fixed code:
N = int(input())
A = list(map(int,input().split()))
A.sort(reverse=True)
ans = 0
for i in range(N):
    ans += A[2*i+1]
print(ans)
Buggy code:
n = int(input())
a = [int(i) for i in range(3*n)]
a.sort()
ans = 0
for i in range(3*n):
  if i >= n and (i-n) % 2 == 0:
    ans += a[i]
print(ans)

Fixed code:
n = int(input())
a = [int(i) for i in input().split()]
a.sort()
ans = 0
for i in range(3*n):
  if i >= n and (i-n) % 2 == 0:
    ans += a[i]
print(ans)
Buggy code:
N = int(input())
a = list(map(int, input().split()))

cnt = 0
a.sort(reverse=True)
print(a)

for i in range(1, 2*N, 2):
    cnt += a[i]

print(cnt)

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

cnt = 0
a.sort(reverse=True)

for i in range(1, 2*N, 2):
    cnt += a[i]

print(cnt)
Buggy code:
n = int(input())
li = list(map(int,input().split()))
li.sort(reverse=True)
ans=0
for i in range(1,n+2,2):
    ans += li[i]

print(ans)

Fixed code:
n = int(input())
li = list(map(int,input().split()))
li.sort(reverse=True)
ans=0
for i in range(1,n*2,2):
    ans += li[i]

print(ans)
Buggy code:
n,*a=map(int, open(0).read().split())
print(sum(sorted(a)[n-1:][::2]))

Fixed code:
n,*a=map(int, open(0).read().split())
print(sum(sorted(a)[n:][::2]))
Buggy code:
N = int(input())
A = list(map(int,input().split()))
A.sort()
A.reverse()
ans = 0
print(A)
for i in range(1,2*N+1,2):
    ans += A[i]
print(ans)


Fixed code:
N = int(input())
A = list(map(int,input().split()))
A.sort()
A.reverse()
ans = 0
for i in range(1,2*N+1,2):
    ans += A[i]
print(ans)
Buggy code:
N = int(input())
A = list(map(int, input().split()))

A.sort()
total = 0
for i in range(N):
	total = A[N + 1 + 2*i]

print(total)

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

A.sort()
total = 0
for i in range(N):
  #print(N + 1 + 2*i)
  total += A[N + 2*i]

print(total)