qyliang/CodeNanoFix huggingface dataset:
Buggy code:
N,M = map(int, input().split())
H = list(map(int, input().split()))
loadJ = []
kekka = [True] * N
for i in range(M):
    temp = list(map(int, input().split()))
    loadJ.append(temp)
    
    if H[temp[0] - 1] < H[temp[1] - 1]:
        kekka[temp[0] - 1] = False
    
    if H[temp[1] - 1] < H[temp[0] - 1]:
        kekka[temp[1] - 1] = False

print(kekka.count(True))


Fixed code:
N,M = map(int, input().split())
H = list(map(int, input().split()))
loadJ = []
kekka = [True] * N
for i in range(M):
    temp = list(map(int, input().split()))
    loadJ.append(temp)
    
    if H[temp[0] - 1] <= H[temp[1] - 1]:
        kekka[temp[0] - 1] = False
    
    if H[temp[1] - 1] <= H[temp[0] - 1]:
        kekka[temp[1] - 1] = False

print(kekka.count(True))
Buggy code:
n, m = map(int, input().split())
h = list(map(int, input().split()))
l_n = [True] * n
for i in range(m):
    a, b = map(int, input().split())
    elif h[a-False] >= h[b-False]:
        l_n[b-False] = False
    elif h[a-False] <= h[b-False]:
        l_n[a-False] = False
print(sum(l_n)) 

Fixed code:
n, m = map(int, input().split())
h = list(map(int, input().split()))
l_n = [True] * n
for i in range(m):
    a, b = map(int, input().split())
    if h[a-1] == h[b-1]:
        l_n[b-1] = False
        l_n[a-1] = False
    elif h[a-1] <= h[b-1]:
        l_n[a-1] = False
    elif h[a-1] >= h[b-1]:
        l_n[b-1] = False
print(sum(l_n))
Buggy code:
n,m = map(int, input().split())
hs = list(map(int, input().split()))
d = [1]*n

for i in range(m):
    a,b = map(int, input().split())
    if hs[a-1] <= hs[b-1]:
        d[a-1] = 0
    if hs[a-1] >= hs[b-1]:
        d[b-1] = 0
        
    print(hs,d)
    
print(d.count(1))

Fixed code:
n,m = map(int, input().split())
hs = list(map(int, input().split()))
d = [1]*n

for i in range(m):
    a,b = map(int, input().split())
    if hs[a-1] <= hs[b-1]:
        d[a-1] = 0
    if hs[a-1] >= hs[b-1]:
        d[b-1] = 0
    
print(d.count(1))
Buggy code:
import sys
input = sys.stdin.readline

def ppp(n,m,h,ab):
    g = [1] * n
    for l,r in ab:
        if h[l-1] >= h[r-1]:
            g[r-1] = 0
        if h[l-1] <= h[r-1]:
            g[l-1] = 0
    print(sum(g))
if __name__ == "__main__":
    n,m = map(int,input().split())
    h = list(map(int,input().split()))
    ab = [list(map(int,input().split())) for _ in range(m)]
    ppp(n,m,h,ab_sorted)


Fixed code:
import sys
input = sys.stdin.readline

def ppp(n,m,h,ab):
    g = [1] * n
    for l,r in ab:
        if h[l-1] >= h[r-1]:
            g[r-1] = 0
        if h[l-1] <= h[r-1]:
            g[l-1] = 0
    print(sum(g))
if __name__ == "__main__":
    n,m = map(int,input().split())
    h = list(map(int,input().split()))
    ab = [list(map(int,input().split())) for _ in range(m)]
    ab_sorted = sorted(ab)
    ppp(n,m,h,ab_sorted)
Buggy code:
import copy

n,m=map(int,input().split())
h=list(map(int,input().split()))
l=[]
for i in range(m):
    a,b=map(int,input().split())
    l.append([a,b])

ll=[0]*n

for j in l:
    if h[j[0]-1]>h[j[1]-1]:
        ll[j[1]-1]+=1
    elif h[j[0]-1]==h[j[1]-1]:
        ll[j[1]-1]+=1
        ll[j[0]-1]+=1
    else:
        ll[j[0]-1]+=1

ans=0
for k in ll:
    if k==1:
        ans+=1
print(ans)

Fixed code:
import copy

n,m=map(int,input().split())
h=list(map(int,input().split()))
l=[]
for i in range(m):
    a,b=map(int,input().split())
    l.append([a,b])

ll=[0]*n

for j in l:
    if h[j[0]-1]>h[j[1]-1]:
        ll[j[1]-1]+=1
    elif h[j[0]-1]==h[j[1]-1]:
        ll[j[1]-1]+=1
        ll[j[0]-1]+=1
    else:
        ll[j[0]-1]+=1

ans=0
for k in ll:
    if k==0:
        ans+=1
print(ans)
Buggy code:
n,m = map(int,input().split())
h = list(map(int,input().split()))
q = [1]*1
for i in range(m):
    a,b = map(int,input().split())
    if h[a-1] < h[b-1]:
        q[a-1] = 0
    elif h[a-1] > h[b-1]:
        q[b-1] = 0
    else:
        q[a-1] = 0
        q[b-1] = 0
print(q.count(1))

Fixed code:
n,m = map(int,input().split())
h = list(map(int,input().split()))
q = [1]*n
for i in range(m):
    a,b = map(int,input().split())
    if h[a-1] < h[b-1]:
        q[a-1] = 0
    elif h[a-1] > h[b-1]:
        q[b-1] = 0
    else:
        q[a-1] = 0
        q[b-1] = 0
print(q.count(1))
Buggy code:
n,m=[int(_) for _ in input().split()]
H=[int(_) for _ in input().split()]
Hlist=[(set() for a in range(n))]
count=0
for a in range(m):
    a,b=[int(_) for _ in input().split()]
    Hlist[a-1].add(b-1)
    Hlist[b-1].add(a-1)
for i,j in enumerate(Hlist):
    flag=1
    for a in j:
        if H[a]>=H[i]:
            flag=0
    if flag==1:
        count+=1
    flag=1
print(count)

Fixed code:
n,m=[int(_) for _ in input().split()]
H=[int(_) for _ in input().split()]
Hlist=[set() for a in range(n)]
count=0
for a in range(m):
    a,b=[int(_) for _ in input().split()]
    Hlist[a-1].add(b-1)
    Hlist[b-1].add(a-1)
for i,j in enumerate(Hlist):
    flag=1
    for a in j:
        if H[a]>=H[i]:
            flag=0
    if flag==1:
        count+=1
    flag=1
print(count)
Buggy code:
N,M = map(int, input().split())
H = list(map(int, input().split()))

lst = [0 for i in range(N)]

for m in range(M):
    a,b = map(int, input().split())
    a-=1
    b-=1
    if lst[a] > lst[b]:
        lst[b]-=1
    elif lst[a] < lst[b]:
        lst[b]-=1

print(lst.count(0))

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

lst = [0 for i in range(N)]

for m in range(M):
    a,b = map(int, input().split())
    a-=1
    b-=1
    if H[a] > H[b]:
        lst[b]-=1
    elif H[a] < H[b]:
        lst[a]-=1
    else:
        lst[a]-=1
        lst[b]-=1

print(lst.count(0))
Buggy code:

n,m = list(map(int,input().split()))
h = list(map(int,input().split()))
ab = [list(map(int,input().split())) for i in range(m)]

good_list = [0]*n

for i in range(m):
    a, b = ab[i][0], ab[i][1]
    if h[a-1] < h[b-1]:
        good_list[b-1] = 1
    elif h[a-1] > h[b-1]:
        good_list[a-1] = 1
    else:
        good_list[a-1] = 1
        good_list[b-1] = 1

print(good_list.count(0))


Fixed code:

n,m = list(map(int,input().split()))
h = list(map(int,input().split()))
ab = [list(map(int,input().split())) for i in range(m)]

good_list = [1]*n

for i in range(m):
    a, b = ab[i][0], ab[i][1]
    if h[a-1] < h[b-1]:
        good_list[a-1] = 0
    elif h[a-1] > h[b-1]:
        good_list[b-1] = 0
    else:
        good_list[a-1] = 0
        good_list[b-1] = 0

print(good_list.count(1))
Buggy code:
n, m = list(map(int, input().split()))
heights = list(map(int, input().split()))
flags = [True] * n
count = 0
for _ in range(m):
  roots = list(map(int, input().split()))
  if heights[roots[0] - 1] > heights[roots[1] - 1]:
    flags[roots[1] - 1] = False
  elif heights[roots[0] - 1] < heights[roots[1] - 1]:
    flags[roots[0] - 1] = False
  else:
    flags[roots[1] - 1] = False
    flags[roots[0] - 1] = False
for flag in flags:
  if flag:
    count += 1

Fixed code:
n, m = list(map(int, input().split()))
heights = list(map(int, input().split()))
flags = [True] * n
count = 0
for _ in range(m):
  roots = list(map(int, input().split()))
  if heights[roots[0] - 1] > heights[roots[1] - 1]:
    flags[roots[1] - 1] = False
  elif heights[roots[0] - 1] < heights[roots[1] - 1]:
    flags[roots[0] - 1] = False
  else:
    flags[roots[1] - 1] = False
    flags[roots[0] - 1] = False
for flag in flags:
  if flag:
    count += 1
print(count)
Buggy code:
import sys
input = sys.stdin.readline

def main():
    N, M = map(int, input().split())
    V = [True] * N
    H = [int(v) for v in input().split()]
    AB = [[map(int, input().split())] for _ in range(M)]
    for ab in AB:
        a, b = ab
        a-=1
        b-=1
        # if V[a] or V[b]:
        if H[a] < H[b]:
            V[a] = False
        else:
            V[b] = False
    
    print(V.count(True))

if __name__ == '__main__':
    main()

Fixed code:
import sys
input = sys.stdin.readline

def main():
    N, M = map(int, input().split())
    V = [True] * N
    H = [int(v) for v in input().split()]
    AB = [[int(v) - 1 for v in input().split()] for _ in range(M)]
    for a, b in AB:
        # if V[a] or V[b]:
        if H[a] <= H[b]:
            V[a] = False
        if H[a] >= H[b]:
            V[b] = False
    
    print(V.count(True))

if __name__ == '__main__':
    main()
Buggy code:
n,m=map(int,input().split())
ilst = [int(i) for i in input().split()]
tlst = [0]*n
total = 0
for i in range(m):
    List = [int(j) for j in input().split()]
    print(List)
    xlst = []
    for p in List:
        xlst.append(ilst[p-1])
    print(xlst)
    maxIndex = [i for i, x in enumerate(xlst) if x == max(xlst)]
    print(maxIndex)
    if len(maxIndex) >= 2:
        for k in List:
            tlst[k-1] +=1
    else:
        List.pop(maxIndex[0])
        for k in List:
            tlst[k-1] +=1
for x in tlst:
    if x == 0:
        total +=1
print(total)

Fixed code:
n,m=map(int,input().split())
ilst = [int(i) for i in input().split()]
tlst = [0]*n
total = 0
for i in range(m):
    List = [int(j) for j in input().split()]
    xlst = []
    for p in List:
        xlst.append(ilst[p-1])
    maxIndex = [i for i, x in enumerate(xlst) if x == max(xlst)]
    if len(maxIndex) >= 2:
        for k in List:
            tlst[k-1] +=1
    else:
        List.pop(maxIndex[0])
        for k in List:
            tlst[k-1] +=1
for x in tlst:
    if x == 0:
        total +=1
print(total)
Buggy code:
N, M = map(int, input().split())
H = list(map(int, input().split()))
road = [list(map(int, input().split())) for i in range(M)]
DP = [0 for i in range(N+1)]
DP[0] = -1
kouho = []

for i in range(M):
  Ai = road[i][0]
  Bi = road[i][1]
  if H[Ai - 1] > H[Bi - 1]:
    if DP[Ai] != -1:
      DP[Ai] = 1
    DP[Bi] = -1
  elif H[Ai - 1] == H[Bi - 1]:
    if DP[Ai] != -1 and DP[Bi] != -1:
      DP[Ai] = 1
      DP[Bi] = 1
    else:
      DP[Ai] = -1
      DP[Bi] = -1
  else:
    if DP[Bi] != -1:
      DP[Bi] = 1
    DP[Ai] = -1 

ans = 0
for i in DP:
  if i != -1:
    ans += 1

print(ans)
print(DP)

Fixed code:
N, M = map(int, input().split())
H = list(map(int, input().split()))
road = [list(map(int, input().split())) for i in range(M)]
DP = [0 for i in range(N+1)]
DP[0] = -1
kouho = []

for i in range(M):
  Ai = road[i][0]
  Bi = road[i][1]
  if H[Ai - 1] > H[Bi - 1]:
    if DP[Ai] != -1:
      DP[Ai] = 1
    DP[Bi] = -1
  elif H[Ai - 1] == H[Bi - 1]:
    DP[Ai] = -1
    DP[Bi] = -1
  else:
    if DP[Bi] != -1:
      DP[Bi] = 1
    DP[Ai] = -1 

ans = 0
for i in DP:
  if i != -1:
    ans += 1

print(ans)
#print(DP)
Buggy code:
n, m = map(int, input().split())
h = list(map(int, input().split()))

ma = [0]*n
for _ in range(m):
    a, b = map(int, input().split())
    ma[a-1] = max(b, ma[a-1])
    ma[b-1] = max(a, ma[b-1])

ans = 0
for i in range(n):
    if h[i]>ma[i]:
        ans += 1
print(ans)

Fixed code:
n, m = map(int, input().split())
h = list(map(int, input().split()))

ma = [0]*n
for _ in range(m):
    a, b = map(int, input().split())
    ma[a-1] = max(h[b-1], ma[a-1])
    ma[b-1] = max(h[a-1], ma[b-1])

ans = 0
for i in range(n):
    if h[i]>ma[i]:
        ans += 1
print(ans)
Buggy code:
n,m = map(int,input().split())
h = list(map(int,input().split()))
ans = 0
arr = [[] for i in range(n)]
for i in range(m):
    a,b = map(int,input().split())
    arr[a-1].append(b-1)
    arr[b-1].append(a-1)

for i in range(len(h)):
    tmph = h[i]
    flg = 1
    if arr[i]:
        for j in arr[i]:
            if tmph <= h[j]:
                flg = 0
                break
    if flg == 1:
        ans +=1
        print(i)
print(ans)

Fixed code:
n,m = map(int,input().split())
h = list(map(int,input().split()))
ans = 0
arr = [[] for i in range(n)]
for i in range(m):
    a,b = map(int,input().split())
    arr[a-1].append(b-1)
    arr[b-1].append(a-1)

for i in range(len(h)):
    tmph = h[i]
    flg = 1
    if arr[i]:
        for j in arr[i]:
            if tmph <= h[j]:
                flg = 0
                break
    if flg == 1:
        ans +=1
print(ans)
Buggy code:
N,M = map(int,input().split())
c = [1 for _ in range(N)]
H = list(map(int,input().split()))

for i in range(M):
  a, b = map(int,input().split())
  if(H[a-1] > H[b-1]):
    c[b-1] = 0
  else:
    c[a-1] = 0
print(c.count(1))

Fixed code:
N,M = map(int,input().split())
c = [1 for _ in range(N)]
H = list(map(int,input().split()))

for i in range(M):
  a, b = map(int,input().split())
  if(H[a-1] > H[b-1]):
    c[b-1] = 0
  elif(H[a-1] < H[b-1]):
    c[a-1] = 0
  else:
    c[a-1] = c[b-1] = 0
print(c.count(1))
Buggy code:
n, m = [int(i) for i in input().split()]
h = [int(i) for i in input().split()]
hs = [[] for i in range(n)]
for i in range(m):
  a, b = [int(i) for i in input().split()]
  hs[a-1].append(h[b-1])
  hs[b-1].appned(h[a-1])
c = 0
for i in range(n):
  if len(hs[i]) == 0:
    c += 1
  elif h[i] > max(hs[i]):
    c += 1
print(c)

Fixed code:
n, m = [int(i) for i in input().split()]
h = [int(i) for i in input().split()]
hs = [[] for i in range(n)]
for i in range(m):
    a, b = [int(i) for i in input().split()]
    hs[a-1].append(h[b-1])
    hs[b-1].append(h[a-1])
c = 0
for i in range(n):
    if len(hs[i]) == 0:
        c += 1
    elif h[i] > max(hs[i]):
        c += 1
print(c)
Buggy code:


def main():
    NM = list(map(int,input().split()))
    H = list(map(int,input().split()))

    # AB = [list(map(int,input().split())) for i in range(NM[1])]

    Judge = [True] * NM[0]

    for i in range(NM[1]):
        ABi = list(map(int,input().split()))


        if H[ABi[0]-1] > H[ABi[1]-1]:
            if Judge[ABi[0]-1]:
                Judge[ABi[0]-1] = True
            Judge[ABi[1]-1] = False

        elif H[ABi[0]-1] == H[ABi[1]-1]:
            Judge[ABi[0] - 1] = False
            Judge[ABi[1] - 1] = False

        else:
            Judge[ABi[0] - 1] = False
            if Judge[ABi[1]-1]:
                Judge[ABi[1] - 1] = True

    print(Judge)
    print(Judge.count(True))











if __name__ == '__main__':
    main()



Fixed code:


def main():
    NM = list(map(int,input().split()))
    H = list(map(int,input().split()))

    # AB = [list(map(int,input().split())) for i in range(NM[1])]

    Judge = [True] * NM[0]

    for i in range(NM[1]):
        ABi = list(map(int,input().split()))


        if H[ABi[0]-1] > H[ABi[1]-1]:
            if Judge[ABi[0]-1]:
                Judge[ABi[0]-1] = True
            Judge[ABi[1]-1] = False

        elif H[ABi[0]-1] == H[ABi[1]-1]:
            Judge[ABi[0] - 1] = False
            Judge[ABi[1] - 1] = False

        else:
            Judge[ABi[0] - 1] = False
            if Judge[ABi[1]-1]:
                Judge[ABi[1] - 1] = True

    # print(Judge)
    print(Judge.count(True))











if __name__ == '__main__':
    main()
Buggy code:
# -*- coding: utf-8 -*-
n,m = list(map(int,input().split()))

h = list(map(int,input().split()))
ab = [list(map(int,input().split())) for i in range(m)]


bad_tenbo_list = [0] * (n)
for a,b in ab:
    if h[a-1] > h[b-1]:
        bad_tenbo_list[b-1]=1
    else:
        bad_tenbo_list[a-1]=1

print(n-sum(bad_tenbo_list))

Fixed code:
# -*- coding: utf-8 -*-
n,m = list(map(int,input().split()))

h = list(map(int,input().split()))
ab = [list(map(int,input().split())) for i in range(m)]


bad_tenbo_list = [0] * (n)
for a,b in ab:
    if h[a-1] > h[b-1]:
        bad_tenbo_list[b-1]=1
    elif h[a-1] < h[b-1]:
        bad_tenbo_list[a-1]=1
    else:
        bad_tenbo_list[a-1]=1
        bad_tenbo_list[b-1]=1

print(n-sum(bad_tenbo_list))
Buggy code:
n,m=map(int,input().split())
h = list(map(int,input().split()))
a = [list(map(int,input().split())) for j in range(m)]
# print("h:",h)
# print("a",a)
can_go = [[] for i in range(n)]
# print(can_go)
for i in a:
    # print(i)
    can_go[i[0]-1].append(i[1])
    can_go[i[1]-1].append(i[0])
# print(can_go)
b = 0
ans=0
for i,j in enumerate(can_go):
    # for j in can_go:
    b= 0

    for k in j:
        print( h[k-1]-h[i])
        if h[k-1]>=h[i]:
            b=1
            # print("break")
            break
    if b==1:
        b=0
    else:
        ans+=1
print(ans)
    



Fixed code:
n,m=map(int,input().split())
h = list(map(int,input().split()))
a = [list(map(int,input().split())) for j in range(m)]
# print("h:",h)
# print("a",a)
can_go = [[] for i in range(n)]
# print(can_go)
for i in a:
    # print(i)
    can_go[i[0]-1].append(i[1])
    can_go[i[1]-1].append(i[0])
# print(can_go)
b = 0
ans=0
for i,j in enumerate(can_go):
    # for j in can_go:
    b= 0

    for k in j:
        # print( h[k-1]-h[i])
        if h[k-1]>=h[i]:
            b=1
            # print("break")
            break
    if b==1:
        b=0
    else:
        ans+=1
print(ans)
Buggy code:
n,m=map(int,input().split())
h=list(map,input().split())
x=[[] for i in range(n)]
for i in range(m):
  a,b=map(int,input().split())
  x[a-1].append(b-1)
  x[b-1].append(a-1)
c=0
for i in range(n):
  f=1
  maxh=0
  for j in x[i]:
    maxh=max(maxh,h[j])
  if maxh>=h[i]:
    f=0
  c+=f
print(c)

Fixed code:
n,m=map(int,input().split())
h=list(map(int,input().split()))
x=[[] for i in range(n)]
for i in range(m):
  a,b=map(int,input().split())
  x[a-1].append(b-1)
  x[b-1].append(a-1)
c=0
for i in range(n):
  f=1
  maxh=0
  for j in x[i]:
    maxh=max(maxh,h[j])
  if maxh>=h[i]:
    f=0
  c+=f
print(c)
Buggy code:
N,M = map(int, input().split())
H = list(map(int, input().split()))
res = [1]*N
for i in range(M):
    a,b = map(int, input().split())
    if H[a-1] <= H[b-1]:
        res[a-1] = 0
    else:
        res[b-1] = 0
print(sum(res))

Fixed code:
N,M = map(int, input().split())
H = list(map(int, input().split()))
res = [1]*N
for i in range(M):
    a,b = map(int, input().split())
    if H[a-1] <= H[b-1]:
        res[a-1] = 0
    if H[b-1] <= H[a-1]:
        res[b-1] = 0
print(sum(res))
Buggy code:
N,M=map(int,input().split())
H=[int(i) for i in input().split()]
ans=[1 for i in range(N)]
for a in range(M):
    A,B=map(int,input().split())
    if H[A-1]>H[B-1]:
        ans[B-1]=0
    else:
        ans[A-1]=0
print(sum(ans))

Fixed code:
N,M=map(int,input().split())
H=[int(i) for i in input().split()]
ans=[1 for i in range(N)]
for a in range(M):
    A,B=map(int,input().split())
    if H[A-1]>H[B-1]:
        ans[B-1]=0
    elif H[A-1]==H[B-1]:
        ans[B-1]=0
        ans[A-1]=0
    else:
        ans[A-1]=0
print(sum(ans))
Buggy code:
N,M= list(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())
    
ans = []*N
for i in range(M):
    a = A[i]-1
    b = B[i]-1
    if H[a] < H[b]:
        ans[a]=1
    elif H[a] > H[b]:
        ans[b]=1
    else:
        ans[a]=0
        ans[b]=0
print(ans.count(1))

Fixed code:
N,M= list(map(int, input().split())) 
H = list(map(int, input().split())) 
A = [0]*M
B = [0]*M
ans = [1]*N

for i in range(M):
    A[i], B[i]= map(int, input().split())
    

for i in range(M):
    a = A[i]-1
    b = B[i]-1
    if H[a] < H[b]:
        ans[a]=0
    elif H[a] > H[b]:
        ans[b]=0
    else:
        ans[a]=0
        ans[b]=0
        
print(ans.count(1))
Buggy code:
n, m = map(int, input().split())
h = list(map(int, input().split()))

obs = [0]*n

for _ in range(m):
    a, b = map(lambda x: int(x)-1, input().split())
    if h[a] > h[b]:
        obs[b] = 1;
    elif h[b] > h[a]:
        obs[a] = 1;

print(obs.count(0))


Fixed code:
n, m = map(int, input().split())
h = list(map(int, input().split()))

obs = [0]*n

for _ in range(m):
    a, b = map(lambda x: int(x)-1, input().split())
    if h[a] > h[b]:
        obs[b] = 1;
    elif h[b] > h[a]:
        obs[a] = 1;
    else:
        obs[a] = 1;
        obs[b] = 1;

print(obs.count(0))
Buggy code:
N,M=map(int,input().split())
high=list(map(int,input().split()))
A=[0]*N
for i in range(M):
    a,b=map(int,input().split())
    A[a-1]=max(A[a-1],H[b-1])
    A[b-1]=max(A[b-1],H[a-1])
res=sum(H[i]>A[i] for i in range(N))
print(res)


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

A = [0] * N
for i in range(M):
    a, b = map(int, input().split())
    A[a - 1] = max(A[a - 1], H[b - 1])
    A[b - 1] = max(A[b - 1], H[a - 1])

ans = sum(H[i] > A[i] for i in range(N))
print(ans)
Buggy code:
N, M = map(int, input().split())

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

lst = []
for i in range(M):
    A, B = map(int, input().split())
    lst.append([A,B])

r = [0]*N

for i, j in lst:
    i -= 1
    j -= 1
    if H[i] >= H[j] and r[i] >= 0:
        r[i] = H[i]
        r[j] = -1
    if H[j] >= H[i] and r[j] >= 0:
        r[j] = H[j]
        r[i] = -1


num = 0
for i in r:
    if i >= 0:
        num += 1

print(num)


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

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

lst = []
for i in range(M):
    A, B = map(int, input().split())
    lst.append([A,B])

r = [0]*N

for i, j in lst:
    i -= 1
    j -= 1
    if H[i] >= H[j]:
        if r[i] >= 0:
            r[i] = H[i]
        r[j] = -1
    if H[j] >= H[i]:
        if r[j] >= 0:
            r[j] = H[j]
        r[i] = -1


num = 0
for i in r:
    if i >= 0:
        num += 1

print(num)
Buggy code:
n, m = list(map(int, input().split(' ')))
hn = list(map(int, input().split(' ')))
abm = [None] * m

d = defaultdict(list)
for i in range(m):
    v = list(map(int, input().split(' ')))
    d[v[0]].append(v[1])
    d[v[1]].append(v[0])
    

count = 0

for i in range(1, n + 1):
    cand = d.get(i)
    if cand is None:
        count += 1
        continue
    ok = True
    for c in cand:
        if hn[i - 1] <= hn[c - 1]:
            ok = False
            break
    if ok:
        count += 1
print(count)


Fixed code:
from collections import defaultdict

n, m = list(map(int, input().split(' ')))
hn = list(map(int, input().split(' ')))
abm = [None] * m

d = defaultdict(list)
for i in range(m):
    v = list(map(int, input().split(' ')))
    d[v[0]].append(v[1])
    d[v[1]].append(v[0])
    

count = 0

for i in range(1, n + 1):
    cand = d.get(i)
    if cand is None:
        count += 1
        continue
    ok = True
    for c in cand:
        if hn[i - 1] <= hn[c - 1]:
            ok = False
            break
    if ok:
        count += 1
print(count)
Buggy code:
N,M = map(int,input().split())
H = list(map(int,input().split()))
H = [0] + H
Tree = [0]
for n in range(N):
  Tree = Tree + [1]
for _ in range(M):
  A,B = map(int,input().split())
  if H[A] >= H[B]:
    H[B] = 0
  else:
    H[A] = 0
print(sum(H))

Fixed code:
N,M = map(int,input().split())
H = list(map(int,input().split()))
H = [0] + H
Tree = [0] + [1]*N
for _ in range(M):
  A,B = map(int,input().split())
  if H[A] > H[B]:
    Tree[B] = 0
  elif H[A] == H[B]:
    Tree[A]=0
    Tree[B]=0
  else:
    Tree[A] = 0
print(sum(Tree))
Buggy code:
n,k= map(int,input().split())
h=list(map(int,input().split()))

x=[0]*n
for i in range(k):
    a,b = map(int, input().split())
    if h[a-1]>h[b-1]:
      x[a-1]+=1
    elif h[a-1]<h[b-1]:
      x[b-1]+=1
print(x.count(0))

Fixed code:
n,k= map(int,input().split())
h=list(map(int,input().split()))

x=[0]*n
for i in range(k):
    a,b = map(int, input().split())
    if h[a-1]>=h[b-1]:
      x[b-1] +=1
    if h[b-1]>=h[a-1]:
      x[a-1] +=1
print(x.count(0))
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())
    A[i] -= 1
    B[i] -= 1
lis = [0]*N
for i in range(M):
    if H[A[i]] >= H[B[i]]:
        lis[B[i]] = 1
    if H[A[i]] <= H[B[i]]:
        lis[A[i]] = 1
    
    print(lis.count(0))

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())
    A[i] -= 1
    B[i] -= 1

lis = [0]*N

for i in range(M):
    if H[A[i]] >= H[B[i]]:
        lis[B[i]] = -1
    if H[A[i]] <= H[B[i]]:
        lis[A[i]] = -1
    

print(lis.count(0))