qyliang/CodeNanoFix huggingface dataset:
Buggy code:
import math, sys
from bisect import bisect_left, bisect_right
from collections import Counter, defaultdict, deque
from copy import deepcopy
from functools import lru_cache
from heapq import heapify, heappop, heappush
from itertools import accumulate, combinations, permutations
input = sys.stdin.readline
mod = 10**9 + 7
ns = lambda: input().strip()
ni = lambda: int(input().strip())
nm = lambda: map(int, input().split())
nl = lambda: list(map(int, input().split()))

def main():
    n = ni()
    s = [ns() for _ in range(n)]
    m = ni()
    t = [ns() for _ in range(m)]

    c1 = Counter(s)
    c2 = Counter(t)
    ans = []
    for key1, value1 in c1.items():
        if key1 in c2.keys():
            ans.append(value1 - c2[key1])
        else:
            ans.append(value1)
            
    print(max(ans))
        

if __name__ == '__main__':
    main()

Fixed code:
import math, sys
from bisect import bisect_left, bisect_right
from collections import Counter, defaultdict, deque
from copy import deepcopy
from functools import lru_cache
from heapq import heapify, heappop, heappush
from itertools import accumulate, combinations, permutations
input = sys.stdin.readline
mod = 10**9 + 7
ns = lambda: input().strip()
ni = lambda: int(input().strip())
nm = lambda: map(int, input().split())
nl = lambda: list(map(int, input().split()))

def main():
    n = ni()
    s = [ns() for _ in range(n)]
    m = ni()
    t = [ns() for _ in range(m)]

    c1 = Counter(s)
    c2 = Counter(t)
    ans = []
    for key1, value1 in c1.items():
        if key1 in c2.keys():
            ans.append(value1 - c2[key1])
        else:
            ans.append(value1)

    print(max(max(ans), 0))
        

if __name__ == '__main__':
    main()
Buggy code:
from collections import defaultdict

blue=int(input())
blueList = []

for i in range(blue):
  blueList.append(input())

red=int(input())
redList = []

for i in range(red):
  redList.append(input())

dict = defaultdict(int)

for b in blueList:
  dict[b] += 1

for r in redList:
  dict[r] -= 1

max = -10000

for s in dict:
  if dict[s] > max:
    max = dict[s]
  
print(max)

Fixed code:
from collections import defaultdict

blue=int(input())
blueList = []

for i in range(blue):
  blueList.append(input())

red=int(input())
redList = []

for i in range(red):
  redList.append(input())

dict = defaultdict(int)

for b in blueList:
  dict[b] += 1

for r in redList:
  dict[r] -= 1

max = -10000

for s in dict:
  if dict[s] > max:
    max = dict[s]

if max <= 0:
  max = 0
print(max)
Buggy code:
import collections
n = int(input())
s = []
for _ in range(n):
    s.append(input())
m = int(input())
t = []
for _ in range(m):
    t.append(input())
s_ = collections.Counter(s)
t_ = collections.Counter(t)
a = []
for key in s_.keys():
    num = s_[key] - t_[key]
    a.append(num)
print(max(a))

Fixed code:
import collections
n = int(input())
s = []
for _ in range(n):
    s.append(input())
m = int(input())
t = []
for _ in range(m):
    t.append(input())
s_ = collections.Counter(s)
t_ = collections.Counter(t)
a = []
for key in s_.keys():
    num = s_[key] - t_[key]
    a.append(num)
print(max(max(a),0))
Buggy code:
n = int(input())
blue = []
for i in range(n):
    blue.append(input())
m = int(input())
red = []
for i in range(m):
    red.append(input())
ans = 0
for i in range(n):
    ans = max(0,blue.count(blue[i])-red.count(blue[i]))
print(ans)

Fixed code:
n = int(input())
blue = []
for i in range(n):
    blue.append(input())
m = int(input())
red = []
for i in range(m):
    red.append(input())
ans = 0
for i in range(n):
    ans = max(ans,blue.count(blue[i])-red.count(blue[i]))
print(ans)
Buggy code:
N = int(input())
s = [input() for i in range(N)]

M = int(input())
t = [input() for i in range(M)]

count_max = -10000
for i in range(N):
    count = s.count(s[i]) - t.count(s[i])
    if count > count_max:
         count_max = count
            
print(count)


Fixed code:
N = int(input())
s = [input() for i in range(N)]

M = int(input())
t = [input() for i in range(M)]

count_max = 0
for i in range(N):
    count = s.count(s[i]) - t.count(s[i])
    if count > count_max:
         count_max = count
            
print(count_max)
Buggy code:
N = int(input())
S = [input() for i in range(N)]
M = int(input())
T = [input() for i in range(N)]

ans = 0
for i in S:
    ans = max(ans, S.count(i) - T.count(i))

print(ans)

Fixed code:
N = int(input())
S = [input() for i in range(N)]
M = int(input())
T = [input() for i in range(M)]

ans = 0
for i in S:
    ans = max(ans, S.count(i) - T.count(i))

print(ans)
Buggy code:
from collections import defaultdict as ddf
n=int(input())
s=[input() for _ in range(n)]
m=int(input())
t=[input() for _ in range(m)]

dd=ddf(lambda:0)
for e in s: dd[e]+=1
for e in t: dd[e]-=1
print(max(dd.values()))

Fixed code:
from collections import defaultdict as ddf
n=int(input())
s=[input() for _ in range(n)]
m=int(input())
t=[input() for _ in range(m)]

dd=ddf(lambda:0)
for e in s: dd[e]+=1
for e in t: dd[e]-=1
print(max(0,max(dd.values())))
Buggy code:
ans={}
n=int(input())
for i in range(n):
    a = input()
    if a in ans:
        ans[a]+=1
    else:
        ans[a] = 1
m=int(input())
for i in range(m):
    a = input()
    if a in ans:
        ans[a]-=1
    else:
        ans[a] = -1
ans = sorted(ans.items(), key=lambda x: x[1], reverse=True)
print(ans[0][0])

Fixed code:
ans={}
n=int(input())
for i in range(n):
    a = input()
    if a in ans:
        ans[a]+=1
    else:
        ans[a] = 1
m=int(input())
for i in range(m):
    a = input()
    if a in ans:
        ans[a]-=1
    else:
        ans[a] = -1
ans = sorted(ans.items(), key=lambda x: x[1], reverse=True)
if ans[0][1] < 0:
    print(0)
else:
    print(ans[0][1])
Buggy code:
dict_ = dict()
[exec("dict_['{0}'] = dict_.get('{0}', 0) + 1".format(input())) for _ in range(int(input()))]
[exec("dict_['{0}'] = dict_.get('{0}', 0) - 1".format(input())) for _ in range(int(input()))]
print(max(dict_.values()))


Fixed code:
dict_ = dict()
[exec("dict_['{0}'] = dict_.get('{0}', 0) + 1".format(input())) for _ in range(int(input()))]
[exec("dict_['{0}'] = dict_.get('{0}', 0) - 1".format(input())) for _ in range(int(input()))]
print(max(max(dict_.values()), 0))
Buggy code:
n = int(input())
s_list = [input() for i in range(n)]
m = int(input())
t_list = [input() for j in range(m)]


def list_diff(list1, list2):
    result = list1.copy()
    for val in list2:
        if val in result:
            result.remove(val)
    return result


def count_max(diff_list):
    cnt_list = [diff_list.count(ele) for ele in set(diff_list)]
    return max(cnt_list)


lst = list_diff(s_list, t_list)
print(count_max(lst))

Fixed code:
n = int(input())
s_list = [input() for i in range(n)]
m = int(input())
t_list = [input() for j in range(m)]


def list_diff(list1, list2):
    result = list1.copy()
    for val in list2:
        if val in result:
            result.remove(val)
    return result


def count_max(diff_list):
    cnt_list = [diff_list.count(ele) for ele in set(diff_list)]
    if len(cnt_list) != 0:
        return max(cnt_list)
    else:
        return 0


lst = list_diff(s_list, t_list)
print(count_max(lst))
Buggy code:
nblues = int(input())
profits = dict()
for _ in range(nblues):
    word = input().rstrip("\n")
    profits[word] = profits.get(word, 0) + 1

nreds = int(input())
for _ in range(nreds):
    word = input().rstrip("\n")
    profits[word] = profits.get(word, 0) - 1

print(max(profits.items(), key=lambda t: t[1])[0])

Fixed code:
nblues = int(input())
profits = dict()
for _ in range(nblues):
    word = input().rstrip("\n")
    profits[word] = profits.get(word, 0) + 1

nreds = int(input())
for _ in range(nreds):
    word = input().rstrip("\n")
    profits[word] = profits.get(word, 0) - 1

print(max(0, max(profits.items(), key=lambda t: t[1])[1]))
Buggy code:
N = int(input())
S = []
for i in range(N):
  s.append(input())

M = int(input())
T = []
for i in range(N):
  t.append(input())

ans = 0
for s in S:
  score = 0
  for s2 in S:
    if s == s2:
      score += 1
  for t in T:
    if s == t:
      score -= 1
  ans = max(ans, score)

print(ans)

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

M = int(input())
T = []
for i in range(M):
  T.append(input())

ans = 0
for s in S:
  score = 0
  for s2 in S:
    if s == s2:
      score += 1
  for t in T:
    if s == t:
      score -= 1
  ans = max(ans, score)

print(ans)
Buggy code:
N = int(input())
d = {}
for i in range(N):
    s = input()
    if s in d.keys():
        d[s] += 1
    else:
        d[s] = 1
M = int(input())
for i in range(M):
    t = input()
    if t in d.keys():
        d[t] -= 1
    else:
        d[t] = -1
print(max(d.values()))


Fixed code:
N = int(input())
d = {}
for i in range(N):
    s = input()
    if s in d.keys():
        d[s] += 1
    else:
        d[s] = 1
M = int(input())
for i in range(M):
    t = input()
    if t in d.keys():
        d[t] -= 1
    else:
        d[t] = -1
print(max(max(d.values()),0))
Buggy code:
ans=0
n=int(input())
lst=[]
for i in range(n):
  lst.append(input())
m=int(input())
x=[]
for j in range(m):
  x.append(int(input()))
for k in set(lst):
  c=lst.count(k)-x.cont(k)
  ans=max(ans,c)
print(ans)

Fixed code:
ans=0
n=int(input())
lst=[]
for i in range(n):
  lst.append(input())
m=int(input())
x=[]
for j in range(m):
  x.append(input())
for k in set(lst):
  c=lst.count(k)-x.count(k)
  ans=max(ans,c)
print(ans)
Buggy code:
from collections import Counter
N = int(input())
s = sorted([input() for _ in range(N)])
M = int(input())
t = sorted([input() for _ in range(M)])

print(Counter(s))
d = {}
for val,cnt in Counter(s).items():
    d[val] = cnt
print(Counter(t))

for val,cnt in Counter(t).items():
    if val in d:
        d[val] -= cnt
print(max(max(d.values()),0))

Fixed code:
from collections import Counter
N = int(input())
s = sorted([input() for _ in range(N)])
M = int(input())
t = sorted([input() for _ in range(M)])

d = {}
for val,cnt in Counter(s).items():
    d[val] = cnt

for val,cnt in Counter(t).items():
    if val in d:
        d[val] -= cnt
print(max(max(d.values()),0))
Buggy code:
red = []
blue = []
ans = 0
n = int(input())
for _ in range(n):
    red.append(input())
m = int(input())
for _ in range(n):
    blue.append(input())
for word in set(red):
    if word in blue:
        tmp = red.count(word) - blue.count(word)
    else:
        tmp = red.count(word)
    if tmp > ans:
        ans = tmp
print(ans)

Fixed code:
red = []
blue = []
ans = 0
n = int(input())
for _ in range(n):
    red.append(input())
m = int(input())
for _ in range(m):
    blue.append(input())
for word in set(red):
    if word in blue:
        tmp = red.count(word) - blue.count(word)
    else:
        tmp = red.count(word)
    if tmp > ans:
        ans = tmp
print(ans)
Buggy code:
n = int(input())
s = [input() for i in range(n)]
m = int(input())
t = [input() for i in range(m)]
l = list(set(s))
print(max(0,max(s.count(l[i]) - t.count(l[i]) for i in l)))

Fixed code:
n = int(input())
s = [input() for i in range(n)]
m = int(input())
t = [input() for i in range(m)]
l = list(set(s))
print(max(0,max(s.count(i) - t.count(i) for i in l)))
Buggy code:
from collections import Counter
N = int(input())
s = Counter([input() for _ in range(N)])

M = int(input())
t = Counter([input() for _ in range(M)])

point = [get - t[word] for word, get in s.items()]
print(max(point))


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

M = int(input())
t = Counter([input() for _ in range(M)])

point = [get - t[word] for word, get in s.items()]
print(max(max(point), 0))
Buggy code:
n = int(input())
s = [input() for i in range(n)]
m = int(input())
t = [input() for i in range(m)]
ans = 0
for i in s:
    ans = max(ans, s.count(i) - t.count(s))
print(ans)

Fixed code:
n = int(input())
s = [input() for i in range(n)]
m = int(input())
t = [input() for i in range(m)]
ans = 0
for i in s:
    ans = max(ans, s.count(i) - t.count(i))
print(ans)
Buggy code:
from collections import defaultdict
def main():
    N = int(input())
    ans = 0
    s = defaultdict(int)
    for _ in range(N):
        a = input()
        s[a] += 1
    M = int(input())
    for _ in range(M):
        b = input()
        s[b] -= 1
    for v in s.items():
        ans = max(ans,v[1])
    print(ans)
if __name__ == a__main__":
    main()

Fixed code:
from collections import defaultdict
def main():
    N = int(input())
    ans = 0
    s = defaultdict(int)
    for _ in range(N):
        a = input()
        s[a] += 1
    M = int(input())
    for _ in range(M):
        b = input()
        s[b] -= 1
    for v in s.items():
        ans = max(ans,v[1])
    print(ans)
if __name__ == "__main__":
    main()
Buggy code:
s = [input() for _ in range(int(input()))]
t = [input() for _ in range(int(input()))]
cnt = []

for i in range(len(s)):
    cnt.append(s.count(s[i]) - t.count(s[i]))
print(max(cnt))


Fixed code:
s = [input() for _ in range(int(input()))]
t = [input() for _ in range(int(input()))]
cnt = []

for i in range(len(s)):
    cnt.append(s.count(s[i]) - t.count(s[i]))
print(max(max(cnt),0))
Buggy code:
N = int(input())
s = [input() for i in range(N)]
M = int(input())
t = [input() for i in range(M)]

name_union = set(s) | set(t)
money = {}0
for i, n in enumerate(name_union):
  money.setdefault(n, 0)
  money[n] += sum(map(lambda x: 1 if x == n else 0, s))
  money[n] -= sum(map(lambda x: 1 if x == n else 0, t))
print(0 if max(money.values()) < 0 else max(money.values()))

Fixed code:
N = int(input())
s, t = [], []
for n in range(N):
  s.append(input())

M = int(input())
for m in range(M):
  t.append(input())

name_union = set(s) | set(t)
money = {}
for i, n in enumerate(name_union):
  money.setdefault(n, 0)
  money[n] += sum(map(lambda x: 1 if x == n else 0, s))
  money[n] -= sum(map(lambda x: 1 if x == n else 0, t))
#print(money)
#print(money.values())
print(0 if max(money.values()) < 0 else max(money.values()))
Buggy code:
from collections import defaultdict
dd = defaultdict(int)
n = int(input())
for s in (input() for _ in range(n)):
  dd[s] += 1
m = int(input())
for s in (input() for _ in range(m)):
  dd[s] -= 1
print(max(0, dd.values()))

Fixed code:
from collections import defaultdict
dd = defaultdict(int)
n = int(input())
for s in (input() for _ in range(n)):
  dd[s] += 1
m = int(input())
for s in (input() for _ in range(m)):
  dd[s] -= 1
print(max(0, max(dd.values())))
Buggy code:
d={}
n=int(input())
for i in range(n):
    s=input()
    if s in d: d[s]+=1
    else:      d[s] =1
n=int(input())
    s=input()
    if s in d: d[s]-=1
ans=chk=0
for i in d:
    ans=max(ans,d[i])
print(ans)

Fixed code:
d={}
n=int(input())
for i in range(n):
    s=input()
    if s in d: d[s]+=1
    else:      d[s] =1
n=int(input())
for i in range(n):
    s=input()
    if s in d: d[s]-=1
ans=chk=0
for i in d:
    ans=max(ans,d[i])
print(ans)
Buggy code:
a=int(input())
b,d,e=[],[],[]
for i in range(a):
    b.append(str(input()))
c=int(input())
up,down=0,0
for j in range(c):
    d.append(str(input()))
for k in set(b):
    up+=b.count(k)
    down+=d.count(k)
    e.append(up-down)
    up,down=0,0
print(max(e))

Fixed code:
a=int(input())
b,d,e=[],[],[0]
for i in range(a):
    b.append(str(input()))
c=int(input())
up,down=0,0
for j in range(c):
    d.append(str(input()))
for k in set(b):
    up+=b.count(k)
    down+=d.count(k)
    e.append(up-down)
    up,down=0,0
print(max(e))
Buggy code:
N = int(input())

s = []
t = []
for _ in range(N):
    s.append(input())

for _ in range(N):
    t.append(input())

sets = set(s)

ans = []
for word in sets:
    tmp = 0
    tmp += s.count(word)
    tmp -= t.count(word)
    ans.append(tmp)

print(max(ans))


Fixed code:
N = int(input())
s = []
for _ in range(N):
    s.append(input())

M = int(input())
t = []
for _ in range(M):
    t.append(input())

sets = set(s)

ans = [0]
for word in sets:
    tmp = 0
    tmp += s.count(word)
    tmp -= t.count(word)
    ans.append(tmp)

print(max(ans))
Buggy code:
import collections
N = int(input())
blue = [list(input().split()) for i in range(N)]
M = int(input())
red = [list(input().split()) for i in range(M)]
sum =0
for i in blue:
    score = blue.count(i) - red.count(i)
    if score>sum:
        result = sum
print(sum)

Fixed code:
import collections
N = int(input())
blue = [list(input().split()) for i in range(N)]
M = int(input())
red = [list(input().split()) for i in range(M)]
sum =0
for i in blue:
    score = blue.count(i) - red.count(i)
    if score>sum:
        sum = score
print(sum)
Buggy code:
N = int(input())
d = {}
for i in range(N):
  s = input()
  if s in d:
    d[s] += 1
  else:
    d[s] = 1
M = int(input())
for i in range(M):
  s = input()
  if s in d:
    d[s] -= 1
  else:
    d[s] = -1
l = []
for thisKey in d:
  l.append(d[thisKey])
print(max(l))

Fixed code:
N = int(input())
d = {}
for i in range(N):
  s = input()
  if s in d:
    d[s] += 1
  else:
    d[s] = 1
M = int(input())
for i in range(M):
  s = input()
  if s in d:
    d[s] -= 1
  else:
    d[s] = -1
l = []
for thisKey in d:
  l.append(d[thisKey])
if max(l) >= 0:
  print(max(l))
else:
  print(0)
Buggy code:
# coding: utf-8

b = []
r = []

# input
N = int(input())
for i in range(N):
    arg = input()
    b.append(arg)

M = int(input())
for i in range(M):
    arg = input()
    r.append(arg)

# solve
br = b + r
for i in range(len(br)):
    # initialize
    count_b = 0
    count_r = 0
    # target string
    s = br[i]
    # check blue cards
    for j in range(len(b)):
        if (b[j] == s):
            count_b += 1
    # check red cards
    for j in range(len(r)):
        if (r[j] == s):
            count_r += 1
    # check difference
    diff = count_b - count_r
    if (i == 0):
        X = diff
    elif (diff > X):
        X = diff
if (X < 0):
    X = 0

print("---")
print(X)


Fixed code:
# coding: utf-8

b = []
r = []

# input
N = int(input())
for i in range(N):
    arg = input()
    b.append(arg)

M = int(input())
for i in range(M):
    arg = input()
    r.append(arg)

# solve
br = b + r
for i in range(len(br)):
    # initialize
    count_b = 0
    count_r = 0
    # target string
    s = br[i]
    # check blue cards
    for j in range(len(b)):
        if (b[j] == s):
            count_b += 1
    # check red cards
    for j in range(len(r)):
        if (r[j] == s):
            count_r += 1
    # check difference
    diff = count_b - count_r
    if (i == 0):
        X = diff
    elif (diff > X):
        X = diff
if (X < 0):
    X = 0

print(X)
Buggy code:
n=int(input())
sn=[input() for _ in range(n)]
m=int(input())
sm=[input() for _ in range(m)]
l=list(set(sn))
print(max(0,max([sn.count(l[i])-sm.count(l[i]) for i in range(n)])))

Fixed code:
n=int(input())
sn=[input() for _ in range(n)]
m=int(input())
sm=[input() for _ in range(m)]
l=list(set(sn))
print(max(0,max([sn.count(l[i])-sm.count(l[i]) for i in range(len(l))])))
Buggy code:
N = input()
s = list(input() for i range(N))
M = input()
t = list(input() for i range(M))

s_set = list(set(s))
ans = 0
for name in s_set:
    count = s.count(name) - t.count(name)
    ans = max(count, ans)
    
print(ans)


Fixed code:
N = int(input())
s = list(input() for i in range(N))
M = int(input())
t = list(input() for i in range(M))

s_set = list(set(s))
ans = 0
for name in s_set:
    count = s.count(name) - t.count(name)
    ans = max(count, ans)

print(ans)
Buggy code:
import collections

blue = int(input())
blue_string = [input() for i in range(blue)]
blue_type = set(blue_string)
red = int(input())
red_string = [input() for i in range(red)]
red_type = set(red_string)
blue_number = len(blue_type)
result = [0]

for i in range(blue_number):
    blue_sort = blue_type[i]
    bulue_sort_count = blue_string.count(blue_sort)
    red_sort_count = red_string.count(blue_sort)
    result.append(bulue_sort_count - red_sort_count )
print(max(result))


Fixed code:
import collections

blue = int(input())
blue_string = [input() for i in range(blue)]
blue_type = set(blue_string)
red = int(input())
red_string = [input() for i in range(red)]
red_type = set(red_string)
result = [0]

for i in blue_type:
    bulue_sort_count = blue_string.count(i)
    red_sort_count = red_string.count(i)
    result.append(bulue_sort_count - red_sort_count )
print(max(result))
Buggy code:
dic={}
for i in range(int(input())):
    s=input()
    if s in dic:
        dic[s]+=1
    else:
        dic[s]=1
for i in range(int(input())):
    s=input()
    if s in dic:
        dic[s]-=1
    else:
        dic[s]=-1
print(min(sorted(dic.values())[-1],0))


Fixed code:
dic={}
for i in range(int(input())):
    s=input()
    if s in dic:
        dic[s]+=1
    else:
        dic[s]=1
for i in range(int(input())):
    s=input()
    if s in dic:
        dic[s]-=1
    else:
        dic[s]=-1
print(max(sorted(dic.values())[-1],0))
Buggy code:
import collections
n = int(input())
s = [input() for _ in range(n)]
m = int(input())
t = [input() for _ in range(m)]

c = collections.Counter(s).most_common()
C = []
for i in range(len(c)):
    C.append([c[i][0], c[i][1]])

ans = []
for j in range(len(C)):
    if C[j][0] in t:
        C[j][1] -= t.count(C[j][0])
    ans.append(C[j][1])

print(max(ans))

Fixed code:
import collections
n = int(input())
s = [input() for _ in range(n)]
m = int(input())
t = [input() for _ in range(m)]

c = collections.Counter(s).most_common()
C = []
for i in range(len(c)):
    C.append([c[i][0], c[i][1]])

ans = []
for j in range(len(C)):
    if C[j][0] in t:
        C[j][1] -= t.count(C[j][0])
    ans.append(C[j][1])

print(max(ans) if max(ans) > 0 else 0)
Buggy code:
n = int(input())
blue = [input() for i in range(n)]
m = int(input())
red = [input() for i in range(m)]
a = set(blue)
ans = []
for i in a:
  b = 0
  for j in range(n):
    if blue[j] == i:
      b += 1
  for j in range(m):
    if red[j] == i:
      b -= 1
  ans.append(b)
print(max(ans))

Fixed code:
n = int(input())
blue = [input() for i in range(n)]
m = int(input())
red = [input() for i in range(m)]
a = set(blue)
ans = []
for i in a:
  b = 0
  for j in range(n):
    if blue[j] == i:
      b += 1
  for j in range(m):
    if red[j] == i:
      b -= 1
  ans.append(b)
print(max(0, max(ans)))
Buggy code:
n = int(input())
lsn=[int(input()) for i in range(n)]
m = int(input())
lsm=[int(input()) for i in range(m)]
ls = []
for i in range(n):
  ls.append(lsn.count(lsn[i])-lsm.count(lsn[i]))
if max(ls) <= 0:
  print(0)
else:
  print(max(ls))

Fixed code:
n = int(input())
lsn=[(input()) for i in range(n)]
m = int(input())
lsm=[(input()) for i in range(m)]
ls = []
for i in range(n):
  ls.append(lsn.count(lsn[i])-lsm.count(lsn[i]))
if max(ls) <= 0:
  print(0)
else:
  print(max(ls))
Buggy code:
n=int(input())
nl=[input() for i in range(n)]
m=int(input())
ml=[input() for i in range(n)]
nsl=list(set(nl))
mx=0
for x in range(len(nsl)):
	d=nl.count(nsl[x])-ml.count(nsl[x])
	if d>mx:mx=d
print(max(0,mx))

Fixed code:
n=int(input())
nl=[input() for i in range(n)]
m=int(input())
ml=[input() for i in range(m)]
nsl=list(set(nl))
mx=0
for x in range(len(nsl)):
	d=nl.count(nsl[x])-ml.count(nsl[x])
	if d>mx:mx=d
print(max(0,mx))
Buggy code:
n=int(input())
blue=[input() for i in range(n)]
m=int(input())
red=[input() for i in range(m)]
print(max([blue.count(blue(i))-red.count(blue(i)) for i in range(n)]),0)

Fixed code:
n=int(input())
blue=[input() for i in range(n)]
m=int(input())
red=[input() for i in range(m)]
print(max(max([blue.count(blue[i])-red.count(blue[i]) for i in range(n)]),0))
Buggy code:
n=int(input())
a=[]
b=[]
ans=0

for i in range(n):
    a.append(input())
m=int(input())
for i in range(m):
    b.append(input())
for i in a:
    if i not in b:
        ans=max(ans,a.count(i))
print(ans)

Fixed code:
n=int(input())
a=[]
b=[]
ans=0

for i in range(n):
    a.append(input())
m=int(input())
for i in range(m):
    b.append(input())
for i in a:
    if i not in b:
        ans=max(ans,a.count(i))
    else:
        ans=max(ans,a.count(i)-b.count(i))
print(ans)