qyliang/CodeNanoFix huggingface dataset:
Buggy code:
N = int(input())
from collections import deque
L = deque([])
R = deque([])

for i in range(N):
  S = input()
  l = [0]*len(S)
  if S[0]=='(':
    l[0]=1
  else:
    l[0]=-1
  for j in range(1,len(S)):
    if S[j]=='(':
      l[j] = l[j-1] + 1
    else:
      l[j] = l[j-1] - 1
      
  if l[-1] < 0:
    R.append([min(l)-l[-1],-l[-1]])
  else:
    L.append([min(l),l[-1]])
    
R = sorted(R, key = lambda x:x[0], reverse = True)
L = sorted(L, key = lambda x:x[0])

now = 0
judge = True
for r in R:
  if now+r[0]<0:
    judge = False
    break
  else:
    now += r[1]
    
for l in L:
  if now + l[0]<0:
    judge = False
    break
  else:
    now += r[1]
    
if now!=0:
  judge = False
  
if judge:
  print('Yes')
else:
  print('No')

Fixed code:
N = int(input())
from collections import deque
L = deque([])
R = deque([])

for i in range(N):
  S = input()
  l = [0]*len(S)
  if S[0]=='(':
    l[0]=1
  else:
    l[0]=-1
  for j in range(1,len(S)):
    if S[j]=='(':
      l[j] = l[j-1] + 1
    else:
      l[j] = l[j-1] - 1
  if l[-1] < 0:
    R.append([min(l)-l[-1], -l[-1], min(l), l[-1]])
  else:
    L.append([min(0,min(l)),l[-1]])
    
R = sorted(R, key = lambda x:x[0])
L = sorted(L, key = lambda x:x[0], reverse = True)
now = 0
judge = True
    
for l in L:
  if now + l[0]<0:
    judge = False
    break
  else:
    now += l[1]
    
for r in R:
  if now+r[2]<0:
    judge = False
    break
  else:
    now += r[3]
    
if now!=0:
  judge = False
  
if judge:
  print('Yes')
else:
  print('No')
Buggy code:









def     process(tab, first, end):
    total = first
    #print(tab)
    for i in tab:
        total += i[0]
        if (total < 0):
            return ("No")
    return ("Yes")




N  = int(input())

first = -1
last = -1
tab = []
for i in range(N):
    s = input()
    total = 0
    avant = 0
    apres = 0
    for j in s:
        if (j == '('):
            apres += 1
        elif (j == ')'):
            if (apres > 0):
                apres -= 1
            else:
                avant += 1
    if (avant == 0 and first == -1):
        first = apres
    elif (apres == 0 and last == -1):
        last = avant
    elif (avant > 0 or apres > 0):
        tab.append((apres - avant, avant, apres, s))
    total += avant - apres
#print(tab)
#print(total)
tab = sorted(tab)[::-1]
if (total == 0 and first > -1 and last > -1):
    res = process(sorted(tab), first, last)
else:
    if (total == 0 and N == 1):
        res = "Yes"
    else:
        res = "No"
print(res)


Fixed code:









def     process(tab, first, end):
    #print(tab)
    #print(first, end)
    total = first
    for i in tab:
        if (i[1] > total):
            return ("No")
        total += i[0]
        if (total < 0):
            return ("No")
    if (total == end):
        return ("Yes")
    return ("No")




N  = int(input())

first = -1
last = -1
clean = 0
tab = []
total = 0
for i in range(N):
    s = input()
    avant = 0
    apres = 0
    for j in s:
        if (j == '('):
            apres += 1
        elif (j == ')'):
            if (apres > 0):
                apres -= 1
            else:
                avant += 1
    if (avant == 0 and apres > 0 and first == -1):
        first = apres
    elif (apres == 0 and avant > 0 and last == -1):
        last = avant
    elif (avant > 0 or apres > 0):
        tab.append((apres - avant, avant, apres, s))
    else:
        clean += 1
    total += avant - apres
if (first == -1 and clean > 0):
    first = 0
    clean -= 1
if (last == -1 and clean > 0):
    last = 0


tab = sorted(tab)
tab = tab[::-1]
if (total == 0 and first > -1 and last > -1):
    res = process(tab, first, last)
else:
    if (total == 0 and N == 1):
        res = "Yes"
    else:
        res = "No"
print(res)
Buggy code:
dicpos = {}
dicneg = {}

N = int(input())
for i in range(N):
  buf = [0]
  for s in input():
    if s=="(":
      buf.append(buf[-1] + 1)
    else:
      buf.append(buf[-1] - 1)
  low = min(buf)
  last = buf[-1]
  if last>0:
    if low in dicpos:
      dicpos[low].append(last)
    else:
      dicpos[low] = [last]
  else:
    if low in dicneg:
      dicneg[low].append(last)
    else:
      dicneg[low] = [last]
neg_sorted = sorted(dicneg.items(), key=lambda x:x[0])
pos_sorted = sorted(dicpos.items(), key=lambda x:x[0], reverse=True)
print(neg_sorted)
print(pos_sorted)
summ = 0
flag = 0
for i in pos_sorted:
  for j in i[1]:
    if summ + i[0] < 0:
      flag = 1
      print("No")
      break
    summ += j
if flag == 0:
  for i in neg_sorted:
    for j in sorted(i[1], reverse=True):
      if summ + i[0] < 0:
      	flag = 1
      	print("No")
      	break 
      summ += j
if flag == 0:
  if summ == 0:
    print("Yes")
  else:
    print("No")

Fixed code:
dicpos = {}
dicneg = {}

N = int(input())
for i in range(N):
  buf = [0]
  for s in input():
    if s=="(":
      buf.append(buf[-1] + 1)
    else:
      buf.append(buf[-1] - 1)
  low = min(buf)
  last = buf[-1]
  if last>0:
    if low in dicpos:
      dicpos[low].append(last)
    else:
      dicpos[low] = [last]
  else:
    if low-last in dicneg:
      dicneg[low-last].append(-last)
    else:
      dicneg[low-last] = [-last]
neg_sorted = sorted(dicneg.items(), key=lambda x:x[0], reverse=True)
pos_sorted = sorted(dicpos.items(), key=lambda x:x[0], reverse=True)
#print(neg_sorted)
#print(pos_sorted)
summ = 0
flag = 0
for i in pos_sorted:
  if flag == 1:
    break
  for j in i[1]:
    if summ + i[0] < 0:
      flag = 1
      print("No")
      break
    summ += j
summ2 = 0
if flag == 0:
  for i in neg_sorted:
    if flag == 1:
      break
    for j in i[1]:
      if summ2 + i[0] < 0:
        flag = 1
        print("No")
        break
      summ2 += j
if flag == 0:
  if summ == summ2:
    print("Yes")
  else:
    print("No")
Buggy code:
n = int(input())
s = [0] * n
inc = []
zeros = []
dec = []

for i in range(n):
    s[i] = input()
    start = 0
    minimum = 0
    now = 0
    for c in s[i]:
        if c == '(':now += 1
        else: now -= 1
        minimum = min(minimum, now)
    end = now
    
    if end == 0:
        zeros.append((minimum, i))
    elif start < end:
        inc.append((minimum, i))
    else:
        minimum = minimum - end
        dec.append((minimum, i))

inc.sort(reverse=True)
dec.sort()

exit()
ans = ""
for (m, i) in inc:
    ans += s[i]

for (m, i) in zeros:
    ans += s[i]

for (m, i) in dec:
    ans += s[i]

now = 0

for c in ans:
    if c == '(':now += 1
    else: now -= 1
    if now < 0:
        print("No")
        exit()

if now != 0:
    print("No")
else:
    print("Yes")

Fixed code:
n = int(input())
s = [0] * n
inc = []
zeros = []
dec = []

for i in range(n):
    s[i] = input()
    start = 0
    minimum = 0
    now = 0
    for c in s[i]:
        if c == '(':now += 1
        else: now -= 1
        minimum = min(minimum, now)
    end = now
    
    if end == 0:
        zeros.append((minimum, i))
    elif start < end:
        inc.append((minimum, i))
    else:
        minimum = minimum - end
        dec.append((minimum, i))

inc.sort(reverse=True)
dec.sort()


now = 0
for (m, i) in inc:
    for c in s[i]:
        if c == '(':now += 1
        else: now -= 1
        if now < 0:
            print("No")
            exit()
        
for (m, i) in zeros:
    for c in s[i]:
        if c == '(':now += 1
        else: now -= 1
        if now < 0:
            print("No")
            exit()

for (m, i) in dec:
    for c in s[i]:
        if c == '(':now += 1
        else: now -= 1
        if now < 0:
            print("No")
            exit()

if now != 0:
    print("No")
else:
    print("Yes")
Buggy code:
def main():
    from sys import stdin
    input = stdin.readline
    n = int(input())
    S = [input() for _ in [0]*n]
    s2 = []
    s3 = []
    for s in S:
        temp = [0, 0]
        m = 0
        now = 0
        for i in s:
            if i == "(":
                now += 1
            else:
                now -= 1
            m = min(m, now)
        temp = [-m, (s.count("(")-s.count(")"))-m]
        if temp[0] < temp[1]:
            s2.append(temp)
        else:
            s3.append(temp)
    s2.sort(key=lambda x: (x[0]))
    s3.sort(key=lambda x: (-x[1]))
    cnt = 0
    for i, j in s2:
        cnt -= i
        if cnt < 0:
            print("No")
            return
        cnt += j
    for i, j in s3:
        cnt -= i
        if cnt < 0:
            print("No")
            return
        cnt += j
    if cnt != 0:
        print("No")
        return
    print("Yes")


main()

Fixed code:
def main():
    n = int(input())
    S = [input() for _ in [0]*n]
    s2 = []
    s3 = []
    for s in S:
        temp = [0, 0]
        m = 0
        now = 0
        for i in s:
            if i == "(":
                now += 1
            else:
                now -= 1
            m = min(m, now)
        temp[0] = -m
        temp[1] = (s.count("(")-s.count(")"))-m
        if temp[0] < temp[1]:
            s2.append(temp)
        else:
            s3.append(temp)
    s2.sort(key=lambda x: (x[0]))
    s3.sort(key=lambda x: (-x[1]))
    cnt = 0
    for i, j in s2:
        cnt -= i
        if cnt < 0:
            print("No")
            return
        cnt += j
    for i, j in s3:
        cnt -= i
        if cnt < 0:
            print("No")
            return
        cnt += j
    if cnt != 0:
        print("No")
        return
    print("Yes")


main()
Buggy code:
import heapq

N = int(input())
S = list(input() for _ in range(N))
X = []
for s in S:
    l,r = 0,0
    for c in s:
        if c == ")":
            if r > 0:
                r -= 1
            else:
                l += 1
        else:
            r += 1
    X.append([l,r])
X.sort(key = lambda x:x[0])
Y = []
L = 0
for p in range(N):
    if X[p][0] > L:
        print("No)")
        quit()
    if X[p][1] >= X[p][0]:
        L -= X[p][0]
        L += X[p][1]
    else:
        Y.append(X[p][:])
Y.sort(key = lambda x:-x[1])
for a,b in Y:
    if a > L:
        print("No")
        quit()
    L -= a
    L += b
if L:
    print("No")
else:
    print("Yes")     

Fixed code:
N = int(input())
S = list(input() for _ in range(N))
X = []
for s in S:
    l,r = 0,0
    for c in s:
        if c == ")":
            if r > 0:
                r -= 1
            else:
                l += 1
        else:
            r += 1
    X.append([l,r])
X.sort(key = lambda x:x[0])
Y = []
L = 0
for p,q in X:
    if p > L:
        print("No")
        quit()
    if q >= p:
        L -= p
        L += q
    else:
        Y.append([p,q])
Y.sort(key = lambda x:-x[1])
for a,b in Y:
    if a > L:
        print("No")
        quit()
    L -= a
    L += b
if L:
    print("No")
else:
    print("Yes")
Buggy code:
N = int(input())
S = [input() for _ in range(N)]

D = [[0] * 2 for _ in range(N)]

for i in range(N):
  s = S[i]
  ma = 0
  l = 0
  r = 0
  for j in s:
    if j == ")":
      r += 1
    else:
      l += 1
    ma = max(ma, r - l)
  D[i] = [l - r, ma, s]

cnt = 0
P = []
M = []
for x, y ,s in D:
  if x >= 0:
    if y <= 0:
      cnt += x
    else:
      P.append([x, y])
  else:
    M.append([x, y, s])

P.sort(key = lambda x:x[1])

for x, y in P:
  if y > cnt:
    print("No")
    exit()
  cnt += x

if len(M) == 0:
  if cnt == 0:
    print("Yes")
  else:
    print("No")
  exit()
M.sort(key = lambda x:x[1], reverse = True)

for i in range(len(M) -1, -1, -1):
  x, y, s= M[i]
  if x == y:
    g = x
    M[i] = [0, 0, ""]
    break
else:
  print("No")
  exit()

for x, y, s in M:
  if cnt < y:
    print("No")
    exit()
  cnt += x

if cnt + g == 0:
  print("Yes")
else:
  print("No")


Fixed code:
N = int(input())
S = [input() for _ in range(N)]

D = [[0] * 2 for _ in range(N)]

for i in range(N):
  s = S[i]
  ma = 0
  l = 0
  r = 0
  for j in s:
    if j == ")":
      r += 1
    else:
      l += 1
    ma = max(ma, r - l)
  D[i] = [l - r, ma, s]

cnt = 0
P = []
M = []
for x, y ,s in D:
  if x >= 0:
    if y <= 0:
      cnt += x
    else:
      P.append([x, y])
  else:
    M.append([x, y, s])

P.sort(key = lambda x:x[1])

for x, y in P:
  if y > cnt:
    print("No")
    exit()
  cnt += x

if len(M) == 0:
  if cnt == 0:
    print("Yes")
  else:
    print("No")
  exit()

M.sort(reverse = True)
M.sort(key = lambda x:x[1], reverse = True)

for i in range(len(M)):
  x, y, s = M[i]
  if x == -y:
    g = x
    M[i] = [0, 0, ""]
    break
else:
  print("No")
  exit()

for x, y, s in M:
  if cnt < y:
    print("No")
    exit()
  cnt += x

if cnt + g == 0:
  print("Yes")
else:
  print("No")
Buggy code:
n = int(input())

a = []
b = []
for i in range(n):
    s = input()
    x = 0
    y = 0
    for c in s:
        if c == '(':
            y += 1
        else:
            if y >= 1:
                y -= 1
            else:
                x += 1
    if x < y: a.append([x, y])
    if x > y: b.append([y, x])

def calc(a):
    ret = 0
    for x, y in sorted(a):
        if ret < x: return -1
        ret += y-x
    return ret
   
res1 = calc(a)
res2 = calc(b)
print("Yes" if res1 >= 0 and res1 == res2 else "No")

Fixed code:
n = int(input())

a = []
b = []
for i in range(n):
    s = input()
    x = 0
    y = 0
    for c in s:
        if c == '(':
            y += 1
        else:
            if y >= 1:
                y -= 1
            else:
                x += 1
    if x < y: a.append([x, abs(x-y)])
    else: b.append([y, abs(x-y)])

def calc(a):
    ret = 0
    for x, y in sorted(a):
        if ret < x: return -1
        ret += y
    return ret
   
res1 = calc(a)
res2 = calc(b)
print("Yes" if res1 >= 0 and res1 == res2 else "No")
Buggy code:
n = int(input())
brackets_plus = []
brackets_minus = []
right = 0
left = 0
for i in range(n):
    s = input()
    cur = 0
    m = 0
    for j in range(len(s)):
        if s[j] == "(":
            left += 1
            cur += 1
        else:
            right += 1
            cur -= 1
            m = min(m,cur)
    if cur >= 0:
        brackets_plus.append((m,cur))
    else:
        brackets_minus.append((m,cur,m-cur))
if right != left:
    print("No")
    exit()
cur = 0
brackets_plus.sort(reverse = True)
for i in brackets_plus:
    if i[0] + cur < 0:
        print("No")
        exit()
    cur += i[1]
brackets_minus.sort(key == lambda x:x[2])
for i in brackets_minus:
    if i[0] + cur < 0:
        print("No")
        exit()
    cur += i[1]
print("Yes")

Fixed code:
n = int(input())
brackets_plus = []
brackets_minus = []
right = 0
left = 0
for i in range(n):
    s = input()
    cur = 0
    m = 0
    for j in range(len(s)):
        if s[j] == "(":
            left += 1
            cur += 1
        else:
            right += 1
            cur -= 1
            m = min(m,cur)
    if cur >= 0:
        brackets_plus.append((m,cur))
    else:
        brackets_minus.append((m,cur,m-cur))
if right != left:
    print("No")
    exit()
cur = 0
brackets_plus.sort(reverse = True)
for i in brackets_plus:
    if i[0] + cur < 0:
        print("No")
        exit()
    cur += i[1]
brackets_minus.sort(key = lambda x:x[2])
for i in brackets_minus:
    if i[0] + cur < 0:
        print("No")
        exit()
    cur += i[1]
print("Yes")
Buggy code:
import sys
n = int(input())
ss = input()*n
 
cnt_p = []
cnt_m = []
for i in range(n):
    left = 0
    right = 0
    for s in ss[i]:
        if(s == '('):
            left += 1
        elif(s == ')'):
            if(left > 0):
                left -= 1
            else:
                right += 1
    if(left-right > 0):
        cnt_p.append((right,left))
    else:
        cnt_m.append((right,left))
 
 
cnt_p = sorted(cnt_p, key=lambda x: (x[0]))
cnt_m = sorted(cnt_m, key=lambda x: (x[1]*-1))
cnt = cnt_p + cnt_m
num = 0
for right,left in cnt:
    num -= right
    if(num < 0):
        print('No')
        sys.exit()
    num += left
if(num==0):
    print('Yes')
else:
    print('No')

Fixed code:
import sys
read = sys.stdin.read

n = int(input())
ss = read().split()

cnt_p = []
cnt_m = []
for i in range(n):
    left = 0
    right = 0
    for s in ss[i]:
        if(s == '('):
            left += 1
        elif(s == ')'):
            if(left > 0):
                left -= 1
            else:
                right += 1
    if(left-right > 0):
        cnt_p.append((right,left))
    else:
        cnt_m.append((right,left))


cnt_p = sorted(cnt_p, key=lambda x: (x[0]))
cnt_m = sorted(cnt_m, key=lambda x: (x[1]*-1))
cnt = cnt_p + cnt_m
num = 0
for right,left in cnt:
    num -= right
    if(num < 0):
        print('No')
        exit()
    num += left

if(num==0):
    print('Yes')
else:
    print('No')
Buggy code:
n,m=map(int,input().split())
h=list(map(int,input().split()))
g=[1]*n
for i in range(m):
    a,b=map(int,input().split())
    if a>b:
        g[b]=0
    if b>a:
        g[a]=0
print(sum(g))

Fixed code:
n,m=map(int,input().split())
h=list(map(int,input().split()))
g=[1]*n
for i in range(m):
    a,b=map(int,input().split())
    if h[a-1]>=h[b-1]:
        g[b-1]=0
    if h[b-1]>=h[a-1]:
        g[a-1]=0
print(sum(g))
Buggy code:
x = list(map(int,input().split(" ")))
n,m = x
h = list(map(int,input().split(" ")))
lowerlist = [1] * n
print(h)

for i in range(m):
    ab = list(map(int,input().split(" ")))
    a,b = ab
    print(a)
    print(b)
    # print(ab)
    if h[a-1] >= h[b-1]:
        lowerlist[b-1] = 0
    if h[b-1] >= h[a-1]:
        lowerlist[a-1] = 0
    print(lowerlist)

print(sum(lowerlist))

Fixed code:
x = list(map(int,input().split(" ")))
n,m = x
h = list(map(int,input().split(" ")))
lowerlist = [1] * n

for i in range(m):
    ab = list(map(int,input().split(" ")))
    a,b = ab
    # print(ab)
    if h[a-1] >= h[b-1]:
        lowerlist[b-1] = 0
    if h[b-1] >= h[a-1]:
        lowerlist[a-1] = 0

print(sum(lowerlist))
Buggy code:

d = defaultdict(list)

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

H = list(map(int, input().split()))

for i in range(M):
    a, b = list(map(int, input().split()))
    d[a-1].append(b-1)
    d[b-1].append(a-1)

ans = 0
for i in range(N):
    ng = 0

    if(i not in d):
        ans += 1
        continue

    for j in d[i]:
        if(H[i] <= H[j]): ng = 1
    if(ng != 1):
        ans += 1

print(ans)

Fixed code:
from collections import defaultdict

d = defaultdict(list)

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

H = list(map(int, input().split()))

for i in range(M):
    a, b = list(map(int, input().split()))
    d[a-1].append(b-1)
    d[b-1].append(a-1)

ans = 0
for i in range(N):
    ng = 0

    if(i not in d):
        ans += 1
        continue

    for j in d[i]:
        if(H[i] <= H[j]): ng = 1
    if(ng != 1):
        ans += 1

print(ans)
Buggy code:
## import

## function definition 

## main process
if __name__ == '__main__':
    
    N, M = map(int,input().split())
    HEIGHT_LIST = list(map(int,input().split())) 
    
    ans = [1] * N
    for j in range(M):
        a, b = map(int,input().split())
        a -= 1
        b -= 1
        height_a = HEIGHT_LIST[a]
        height_b = HEIGHT_LIST[b]

        if height_a < height_b:
            ans[point_a] = 0
        elif height_a > height_b:
            ans[point_b] = 0
        else:
            ans[point_a] = 0
            ans[point_b] = 0
    print(sum(ans))

Fixed code:
## import

## function definition 

## main process
if __name__ == '__main__':
    
    N, M = map(int,input().split())
    HEIGHT_LIST = list(map(int,input().split())) 
    
    ans = [1] * N
    for j in range(M):
        a, b = map(int,input().split())
        a -= 1
        b -= 1
        height_a = HEIGHT_LIST[a]
        height_b = HEIGHT_LIST[b]

        if height_a < height_b:
            ans[a] = 0
        elif height_a > height_b:
            ans[b] = 0
        else:
            ans[a] = 0
            ans[b] = 0

    print(sum(ans))
Buggy code:
## import

## function definition 

## main process
if __name__ == '__main__':
    
    ## input
    N, M = map(int,input().split())
    HEIGHT_LIST = list(map(int,input().split())) 
    ROAD_LIST = []
    for j in range(M): 
        ROAD_LIST.append(
            tuple(map(int,input().split()))
        )
    
    ## business logic
    ans = [1] * N
    for j in list(range(M)):
        point_a = ROAD_LIST[j][0]
        point_b = ROAD_LIST[j][1]

        point_a =- 1
        point_b =- 1

        height_a = HEIGHT_LIST[point_a]
        height_b = HEIGHT_LIST[point_b]

        if height_a < height_b:
            ans[point_a] = 0
        elif height_a > height_b:
            ans[point_b] = 0
        else:
            ans[point_a] = 0
            ans[point_b] = 0

    ## output
    print(sum(ans))

Fixed code:
## import

## function definition 

## main process
if __name__ == '__main__':
    
    ## input
    N, M = map(int,input().split())
    HEIGHT_LIST = list(map(int,input().split())) 
    ROAD_LIST = []
    for j in range(M): 
        ROAD_LIST.append(
            tuple(map(int,input().split()))
        )
    
    ## business logic
    ans = [1] * N
    for j in list(range(M)):
        point_a = ROAD_LIST[j][0]
        point_b = ROAD_LIST[j][1]

        point_a -= 1
        point_b -= 1

        height_a = HEIGHT_LIST[point_a]
        height_b = HEIGHT_LIST[point_b]

        if height_a < height_b:
            ans[point_a] = 0
        elif height_a > height_b:
            ans[point_b] = 0
        else:
            ans[point_a] = 0
            ans[point_b] = 0

    ## output
    print(sum(ans))
Buggy code:
n,m = map(int,input().split())
h = list(map(int,input().split()))
a = [0] * m
b = [0] * m
for i in range(m):
    a[i],b[i] = map(int,input().split())
g = [0] * n
for i in range(m):
    if h[a[i]-1] < h[b[i]-1]:
        g[a[i]-1] = 1
    if h[a[i] - 1] > h[b[i] - 1]:
        g[b[i]-1] = 1
c = 0
for i in range(n):
    if g[i] == 0:
        c += 1

print(c)

Fixed code:
n,m = map(int,input().split())
h = list(map(int,input().split()))
a = [0] * m
b = [0] * m
for i in range(m):
    a[i],b[i] = map(int,input().split())
g = [0] * n
for i in range(m):
    if h[a[i]-1] < h[b[i]-1]:
        g[a[i]-1] = 1
    if h[a[i] - 1] > h[b[i] - 1]:
        g[b[i]-1] = 1
    if h[a[i] - 1] == h[b[i] - 1]:
        g[b[i] - 1] = 1
        g[a[i] - 1] = 1
c = 0
for i in range(n):
    if g[i] == 0:
        c += 1

print(c)
Buggy code:
n,m = map(int,input().split())
H = list(map(int,input().split()))
edge = [[] for _ in range(n)]

for _ in range(m):
    a,b = map(int,input().split())
    a -= 1
    b -= 1
    edge[a].append(b)
    edge[b].append(a) 

ans = 0

for i in range(n):
    x = edge[i]
    
    if len(x) == 0:
        ans += 1
        continue
        
    highest = 0
    
    for j in x:
        highest = max(highest,H[j])
        
    if H[i] > highest:
        ans += 1
        
    print("h",i,x,ans)
        
print(ans)

Fixed code:
n,m = map(int,input().split())
H = list(map(int,input().split()))
edge = [[] for _ in range(n)]

for _ in range(m):
    a,b = map(int,input().split())
    a -= 1
    b -= 1
    edge[a].append(b)
    edge[b].append(a) 

ans = 0

for i in range(n):
    x = edge[i]
    
    if len(x) == 0:
        ans += 1
        continue
        
    highest = 0
    
    for j in x:
        highest = max(highest,H[j])
        
    if H[i] > highest:
        ans += 1
        
print(ans)
Buggy code:
N,M= map(int,input().split())

h = [int(i) for i in input().split()]
judge = [True]*N

for i in range (M):
    a,b= map(int,input().split())
    if h[a - 1] > h[b - 1]:
        judge[b-1] = False
    if h[a - 1] < h[b - 1]:
        judge[a - 1] = False
    if h[a - 1] == h[b - 1]:
        judge[b-1] = False
        judge[a - 1] = False

print(jadge.count(True))

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

h = [int(i) for i in input().split()]
judge = [True]*N

for i in range (M):
    a,b= map(int,input().split())
    if h[a - 1] > h[b - 1]:
        judge[b-1] = False
    if h[a - 1] < h[b - 1]:
        judge[a - 1] = False
    if h[a - 1] == h[b - 1]:
        judge[b-1] = False
        judge[a - 1] = False

print(judge.count(True))