qyliang/CodeNanoFix huggingface dataset:
Buggy code:
N,M = map(int,input().split())
H=list(map(int,input().split()))
l = [[]*i for i in range(N)]
print(l)
for i in range(M):
    A,B=map(int,input().split())
    l[A-1].append(B)
    l[B-1].append(A)
ans=0
for j in range(N):
    if all(H[elem-1] < H[j] for elem in l[j])==True:
        ans +=1
print(ans)

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

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

Fixed code:
n, m = list(map(int, input().split()))
hs =  list(map(int, input().split()))
ans = [1]*n
roads = []
for i in range(m):
    roads += [list(map(int, input().split()))]
for road in roads:
    if hs[road[0]-1] <= hs[road[1]-1]:
        ans[road[0]-1] = 0
    if hs[road[0]-1] >= hs[road[1]-1]:
        ans[road[1]-1] = 0
print(ans.count(1))
Buggy code:
import collections
N,M = map(int,input().split())
H=list(map(int,input().split()))
A=[None for _ in range(M)]
B=[None for _ in range(M)]
for i in range (M):
    A[i],B[i] = map(int,input().split())

C=[None for _ in range(M)]
for i in range(M):
    if H[A[i]-1]<=H[B[i]-1]:
        C[A[i]-1]="bad"
    elif H[A[i]-1]>=H[B[i]-1]:
        C[B[i]-1]="bad"

c = collections.Counter(C)
cook=c["bad"]
ans=N-cook
print(ans)

Fixed code:
import collections
N,M = map(int,input().split())
H=list(map(int,input().split()))
A=[None for _ in range(M)]
B=[None for _ in range(M)]
for i in range (M):
    A[i],B[i] = map(int,input().split())

C=[None for _ in range(N)]
for i in range(M):
    if H[A[i]-1]<H[B[i]-1]:
        C[A[i]-1]="bad"
    elif H[A[i]-1]>H[B[i]-1]:
        C[B[i]-1]="bad"
    elif H[A[i]-1]==H[B[i]-1]:
        C[A[i]-1]="bad"
        C[B[i]-1]="bad"
c = collections.Counter(C)
cook=c["bad"]
ans=N-cook
print(ans)
Buggy code:
#! python3

def main():
    n, m = map(int, input().split())
    hlist = list(map(int, input().split()))
    tenbou_set = set(range(1, (n+1)))
    for i in range(m):
        a, b = map(int, input().split())
        if hlist[a-1] < hlist[b-1]:
            tenbou_set.discard(a)
        elif hlist[a-1] > hlist[b-1]:
            tenbou_set.discard(b)

    print(len(tenbou_set))

main()

Fixed code:
#! python3

def main():
    n, m = map(int, input().split())
    hlist = list(map(int, input().split()))
    tenbou_set = set(range(1, (n+1)))
    for i in range(m):
        a, b = map(int, input().split())
        if hlist[(a-1)] < hlist[(b-1)]:
            tenbou_set.discard(a)
        elif hlist[(a-1)] > hlist[(b-1)]:
            tenbou_set.discard(b)
        elif hlist[(a-1)] == hlist[(b-1)]:
            tenbou_set.discard(a)
            tenbou_set.discard(b)

    print(len(tenbou_set))

main()
Buggy code:
import numpy as np
n,m=list(map(int,input().split()))
h=list(map(int,input().split()))

flag=np.zeros(n)+1

for i in range(m):
  a,b=list(map(int,input().split()))
  if h[a-1]>h[b-1]:
    flag[b-1] = 0
  else:
    flag[a-1] = 0
    
print(flag)
ans=np.sum(flag)
print(int(ans))

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

flag=np.zeros(n)+1

for i in range(m):
  a,b=list(map(int,input().split()))
  if h[a-1]>h[b-1]:
    flag[b-1] = 0
  elif h[a-1]==h[b-1]:
    flag[b-1] = 0
    flag[a-1] = 0
  else:
    flag[a-1] = 0
    
ans=np.sum(flag)
print(int(ans))
Buggy code:
N, M = map(int, input().split(' '))
H_ls = list(map(int, input().split(' ')))
edge, rst = [ [] for i in range(N) ], 0
for i in range(M):
    a, b = map(int, input().split(' '))
    a -= 1
    b -= 1
    edge[a].append(b)
    edge[b].append(a)
for i in range(N):
    for j in edge[i]:
        is_peak = True
        if H_ls[i] <= H_ls[j]:
            is_peak = False
    if not is_peak:
        rst += 1
print(rst)

Fixed code:

N, M = map(int, input().split(' '))
H_ls = list(map(int, input().split(' ')))
edge, rst = [ [] for i in range(N) ], 0
for i in range(M):
    a, b = map(int, input().split(' '))
    a -= 1
    b -= 1
    edge[a].append(b)
    edge[b].append(a)
for i in range(N):
    is_peak = True
    for j in edge[i]:
        if H_ls[i] <= H_ls[j]:
            is_peak = False
            break
    if is_peak:
        rst += 1
print(rst)
Buggy code:
from heapq import heappush, heappop


def main():

    N, M = [int(v) for v in input().split()]

    H = [int(v) for v in input().split()]
    link = [0] * N

    for _ in range(M):
        a, b = [int(v) - 1 for v in input().split()]
        link[a] = max(link[a], H[b])
        link[b] = max(link[b], H[a])

    count = 0
    for h, nh in zip(H, link):
        print(h, nh)
        if h > nh:
            count += 1
    print(count)


main()


Fixed code:
from heapq import heappush, heappop


def main():

    N, M = [int(v) for v in input().split()]

    H = [int(v) for v in input().split()]
    link = [0] * N

    for _ in range(M):
        a, b = [int(v) - 1 for v in input().split()]
        link[a] = max(link[a], H[b])
        link[b] = max(link[b], H[a])

    count = 0
    for h, nh in zip(H, link):
        if h > nh:
            count += 1
    print(count)


main()
Buggy code:
# -*- coding: utf-8 -*-
import numpy as np

n, m = map(int, input().split())
h = np.array(input().split(), dtype='int')
bad_tower = np.zeros((n), dtype='int')

for i in range(m):
    a, b = map(int, input().split())
    ha = h[a-1]
    hb = h[b-1]

    if ha > hb:
        bad_tower[b] = 1
    elif ha < hb:
        bad_tower[a] = 1
    elif ha == hb:
        bad_tower[a] = 1
        bad_tower[b] = 1

ans = n - np.sum(bad_tower)

print(ans)

Fixed code:
# -*- coding: utf-8 -*-
import numpy as np

n, m = map(int, input().split())
h = np.array(input().split(), dtype='int')
bad_tower = np.zeros((n), dtype='int')

for i in range(m):
    a, b = map(int, input().split())
    ha = h[a-1]
    hb = h[b-1]

    if ha > hb:
        bad_tower[b-1] = 1
    elif ha < hb:
        bad_tower[a-1] = 1
    elif ha == hb:
        bad_tower[a-1] = 1
        bad_tower[b-1] = 1

ans = n - np.sum(bad_tower)

print(ans)
Buggy code:
import collections
n,m = list(map(int,input().split()))
tower_high = list(map(int,input().split()))
good_tower = [1]*n

def check_tower(a,b):
    if tower_high[a]<tower_high[b]:
        good_tower[a]=0
    elif tower_high[a] > tower_high[b]:
        good_tower[b]=0
    else:
        good_tower[a]=0
        good_tower[b]=0

for i in range(m):
    a,b=list(map(int,input().split()))
    check_tower(a-1,b-1)
print(good_tower)
print(good_tower.count(1))


Fixed code:
import collections
n,m = list(map(int,input().split()))
tower_high = list(map(int,input().split()))
good_tower = [1]*n

def check_tower(a,b):
    if tower_high[a]<tower_high[b]:
        good_tower[a]=0
    elif tower_high[a] > tower_high[b]:
        good_tower[b]=0
    else:
        good_tower[a]=0
        good_tower[b]=0

for i in range(m):
    a,b=list(map(int,input().split()))
    check_tower(a-1,b-1)
print(good_tower.count(1))
Buggy code:
N, M = map(int, input().split())
H = [int(x) for x in input().split()]

a = [0]*len(H)

for i in range(M):
    A = [int(x) for x in input().split()]
    if H[A[0]-1] > H[A[1]-1]:
        a[A[1]-1] += -1
    else:
        a[A[0]-1] += -1

print(a.count(0))

Fixed code:
N, M = map(int, input().split())
H = [int(x) for x in input().split()]

a = [0]*len(H)

for i in range(M):
    A = [int(x) for x in input().split()]
    if H[A[0]-1] > H[A[1]-1]:
        a[A[1]-1] += -1
    elif H[A[0]-1] == H[A[1]-1]:
        a[A[0]-1] += -1
        a[A[1]-1] += -1
    else:
        a[A[0]-1] += -1

print(a.count(0))
Buggy code:
import sys
import time
import math
import itertools as it
def inpl():
    return list(map(int, input().split()))
st = time.perf_counter()
# ------------------------------

N, M = inpl()
H = inpl()
for _ in range(M):
    A, B = inpl()
    if H[A-1] > H[B-1]:
        H[B-1] = 0
    elif H[A-1] < H[B-1]:
        H[A-1] = 0
    else:
        H[A-1] = 0
        H[B-1] = 0
ans = 0
for i in H:
    if i != 0:
        ans += 1
print(ans)

# ------------------------------
ed = time.perf_counter()
print('time:', ed-st, file=sys.stderr)


Fixed code:
import sys
import time
import math
import itertools as it
def inpl():
    return list(map(int, input().split()))
st = time.perf_counter()
# ------------------------------

N, M = inpl()
H = inpl()
dp = [True] * N
for _ in range(M):
    A, B = inpl()
    if H[A-1] > H[B-1]:
        dp[B-1] = False
    elif H[A-1] < H[B-1]:
        dp[A-1] = False
    else:
        dp[A-1] = False
        dp[B-1] = False
ans = 0
for i in dp:
    if i:
        ans += 1
print(ans)

# ------------------------------
ed = time.perf_counter()
print('time:', ed-st, file=sys.stderr)
Buggy code:
N, M = input().split()
height = input().split()
able = []
for n in range(int(N)):
  able.append([])
for m in range(int(M)):
  con = input().split()
  con[0] = int(con[0]) - 1
  con[1] = int(con[1]) - 1
  able[con[0]].append(height(con[1]))
  able[con[1]].append(height(con[0]))
good = []
for n in range(int(N)):
  if len(able[n]) == 0:
    good.append(n)
  else:
    if int(height[n]) > max(able[n])
      good.append(n)
print(len(good))


Fixed code:
N, M = input().split()
height = input().split()
able = []
for n in range(int(N)):
  able.append([])
for m in range(int(M)):
  con = input().split()
  con[0] = int(con[0]) - 1
  con[1] = int(con[1]) - 1
  able[con[0]].append(int(height[con[1]]))
  able[con[1]].append(int(height[con[0]]))
good = []
for n in range(int(N)):
  if len(able[n]) == 0:
    good.append(n)
  else:
    if int(height[n]) > max(able[n]):
      good.append(n)
print(len(good))
Buggy code:
n, m = map(int, input().split())
h = [int(x) for x in input().split()]
ans = [True] * n
for i in range(m):
    a, b = map(int, input().split())
    if h[a-1] < h[b-1]:
        ans[a-1] = False
    elif h[a-1] > h[b-1]:
        ans[b-1] = False
print(ans.count(True))


Fixed code:
n, m = map(int, input().split())
h = [int(x) for x in input().split()]
ans = [True] * n
for i in range(m):
    a, b = map(int, input().split())
    if h[a-1] < h[b-1]:
        ans[a-1] = False
    elif h[a-1] > h[b-1]:
        ans[b-1] = False
    else:
        ans[a-1] = False
        ans[b-1] = False
print(ans.count(True))
Buggy code:
# -*- coding: utf-8 -*-

N, M = map(int, input().split())
H = list(map(int, input().split()))
C = [0]*N

for i in range(M):
    A, B = map(int, input().split())
    if H[A-1] > H[B-1]:
        C[B-1]=1
    if H[A-1] < H[B-1]:
        C[A-1]=1


print("{}".format(N-sum(C)))

Fixed code:
# -*- coding: utf-8 -*-

N, M = map(int, input().split())
H = list(map(int, input().split()))
C = [0]*N

for i in range(M):
    A, B = map(int, input().split())
    if H[A-1] >= H[B-1]:
        C[B-1]=1

    if H[A-1] <= H[B-1]:
        C[A-1]=1
        
    if H[A-1] == H[B-1]:
        if C[A-1]==1:
            C[B-1] = 1
        if C[B-1]==1:
            C[A-1] = 1


print("{}".format(N-sum(C)))
Buggy code:
N,M = map(int,input().split())
H = list(map(int,input().split()))

bridge = [[] for i in range(N+1)]

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

ans = 0
count = 0

for i in range(1,N+1):
    tmp = bridge[i]
    tmp = list(set(tmp))
    flag = True
    for j in range(len(tmp)):
        if H[i-1] < H[tmp[j]-1]:
            flag = False
    if flag == False and len(bridge[i]) != 0:
        continue
    elif flag == True and len(bridge[i]) != 0:
        ans += 1
            
    if len(bridge[i]) == 0:
        ans +=1
        
print(ans)

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

bridge = [[] for i in range(N+1)]

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

ans = 0
count = 0

for i in range(1,N+1):
    tmp = bridge[i]
    tmp = list(set(tmp))
    flag = True
    for j in range(len(tmp)):
        if H[i-1] <= H[tmp[j]-1]:
            flag = False
    if flag == False and len(bridge[i]) != 0:
        continue
    elif flag == True and len(bridge[i]) != 0:
        ans += 1
            
    if len(bridge[i]) == 0:
        ans +=1
        
print(ans)
Buggy code:
import numpy as np

N,M=map(int,input().split())
H=list(map(int,input().split()))
A=[list(map(int,input().split())) for i in range(M)]

ok=np.ones(N)
for i in range(M):
    if H[A[i][0]-1]>H[A[i][1]-1]:
        ok[A[i][0]-1]=1
        ok[A[i][1]-1]=0
    else:
        ok[A[i][1]-1]=1
        ok[A[i][0]-1]=0
print(int(np.sum(ok)))

Fixed code:
import numpy as np

N,M=map(int,input().split())
H=list(map(int,input().split()))
A=[list(map(int,input().split())) for i in range(M)]

ok=np.ones(N)
for i in range(M):
    if H[A[i][0]-1]>H[A[i][1]-1]:
        ok[A[i][1]-1]=0
    elif H[A[i][0]-1]==H[A[i][1]-1]:
        ok[A[i][0]-1]=0
        ok[A[i][1]-1]=0
    else:
        ok[A[i][0]-1]=0
print(int(np.sum(ok)))
Buggy code:
N, M= (int(x) for x in input().split())
height=[int(x) for x in input().split()]
nlist=[1]*N
print(nlist)

for _ in range(M):
    a, b =(int(x) for x in input().split())
    a-=1
    b-=1
    if height[a]<height[b]:
        nlist[a]=0

    if height[b]<height[a]:
        nlist[b]=0
    print(nlist)

print(sum(nlist))

Fixed code:
N, M= (int(x) for x in input().split())
height=[int(x) for x in input().split()]
nlist=[1]*N

for _ in range(M):
    a, b =(int(x) for x in input().split())
    a-=1
    b-=1
    if height[a]<=height[b]:
        nlist[a]=0

    if height[b]<=height[a]:
        nlist[b]=0

print(sum(nlist))
Buggy code:
N,M = map(int, input().split())
H=list(map(int, input().split()))
A=[]
B=[]
for i in range(M):
    A1,B1=map(int, input().split())
    A.append(A1)
    B.append(B1)
miti={}
for i in range(M):
    if A[i] in miti:
        miti[A[i]].append(H[B[i]-1])            
    else:
        miti[A[i]]=[]
        miti[A[i]].append(H[B[i]-1])
    if B[i] in miti:
        miti[B[i]].append(H[A[i]-1])            
    else:
        miti[B[i]]=[]
        miti[B[i]].append(H[A[i]-1])
count=0
print(miti)
for i in range(M):
    if i+1 in miti:
        for j in range(len(miti[i+1])):
            if H[i]<miti[i+1][j]:
                count+=1
                break
    else:
        count+=1
print(N-count)

Fixed code:
N,M = map(int, input().split())
H=list(map(int, input().split()))
A=[]
B=[]
for i in range(M):
    A1,B1=map(int, input().split())
    A.append(A1)
    B.append(B1)
miti={}
for i in range(M):
    if A[i] in miti:
        miti[A[i]].append(H[B[i]-1])            
    else:
        miti[A[i]]=[]
        miti[A[i]].append(H[B[i]-1])
    if B[i] in miti:
        miti[B[i]].append(H[A[i]-1])            
    else:
        miti[B[i]]=[]
        miti[B[i]].append(H[A[i]-1])
count=0
for i in range(N):
    if i+1 in miti:
        for j in range(len(miti[i+1])):
            if H[i]<=miti[i+1][j]:
                count+=1
                break
print(N-count)
Buggy code:
n, m = map(int,input().split())
h = list(map(int,input().split()))
miti = []
miti_w = []
miti_l = []
for i in range(m):
    miti.append(list(map(int,input().split())))
for i in range(m):
    if h[(miti[i][0]-1)] > h[(miti[i][1]-1)]:
        miti_w.append(miti[i][0])
        miti_l.append(miti[i][1])
    elif h[(miti[i][0]-1)] < h[(miti[i][1]-1)]:
        miti_w.append(miti[i][1])
        miti_l.append(miti[i][0])
    else:
        miti_l.append(miti[i][0])
        miti_l.append(miti[i][1])
print(len(list(set(miti_w) - set(miti_l))))

Fixed code:
n, m = map(int,input().split())
h = list(map(int,input().split()))
miti = []
miti_w = []
miti_l = []
for i in range(m):
    miti.append(list(map(int,input().split())))
for i in range(m):
    if h[(miti[i][0]-1)] > h[(miti[i][1]-1)]:
        miti_l.append(miti[i][1])
    elif h[(miti[i][0]-1)] < h[(miti[i][1]-1)]:
        miti_l.append(miti[i][0])
    else:
        miti_l.append(miti[i][0])
        miti_l.append(miti[i][1])
for i in range(1,n+1):
    miti_w.append(i)
print(len(list(set(miti_w) - set(miti_l))))
Buggy code:
N, M = map(int, input().split())

high_list = list(map(int, input().split()))
check_list = [1]*N

for i in range(M):
  a_, b_ = map(int, input().split())
  if high_list[a_-1] < high_list[b_-1]:
    check_list[a_-1] = 0
  elif high_list[a_-1] > high_list[b_-1]:
    check_list[b_-1] = 0
  elif high_list[a_-1] == high_list[b_-1]:
    check_list[a_-1] = 0
    check_list[b_-1] = 0

print(len(check_list))

Fixed code:
N, M = map(int, input().split())
 
high_list = list(map(int, input().split()))
check_list = [1]*N
 
for i in range(M):
  a_, b_ = map(int, input().split())
  if high_list[a_-1] < high_list[b_-1]:
    check_list[a_-1] = 0
  elif high_list[a_-1] > high_list[b_-1]:
    check_list[b_-1] = 0
  elif high_list[a_-1] == high_list[b_-1]:
    check_list[a_-1] = 0
    check_list[b_-1] = 0
 
print(sum(check_list))
Buggy code:
def main():
    N, M = map(int, input().split())
    HN = list(map(int, input().split()))

    temp = [True for _ in range(N)]
    for _ in range(M):
        A, B = map(int, input().split())

        if HN[A - 1] < HN[B - 1]:
            temp[A - 1] = False
        if HN[B - 1] < HN[A - 1]:
            temp[B - 1] = False
        else:
            temp[A - 1] = False
            temp[B - 1] = False

    print(sum([1 for a in temp if a]))


main()


Fixed code:
def main():
    N, M = map(int, input().split())
    HN = list(map(int, input().split()))

    temp = [True for _ in range(N)]
    for _ in range(M):
        A, B = map(int, input().split())

        if HN[A - 1] < HN[B - 1]:
            temp[A - 1] = False
        elif HN[B - 1] < HN[A - 1]:
            temp[B - 1] = False
        else:
            temp[A - 1] = False
            temp[B - 1] = False

    print(sum([1 for a in temp if a]))


main()
Buggy code:
n, m = map(int, input().split())
h = list(map(int, input().split()))
l = []
for i 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
    else:
        ans += 0
    
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
    else:
        ans += 0
    
print(ans)
Buggy code:
# C
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])
    
res = sum([H[i] >= A[i] for i in range(N)])
print(res)

Fixed code:
# C
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])
    
res = sum([H[i] > A[i] for i in range(N)])
print(res)
Buggy code:
n, m = map(int ,input().split(" "))
h = list(map(int, input().split(" ")))

candidates = {}
for i in range(m):
    x, y = map(int, input().split(" "))

    if h[x - 1] <= h[y -1]:
        candidates[x] = False
    if h[x - 1] >= h[y -1]:
        candidates[y] = False
    print(x, y , candidates)

ans = 0
for i in range(1, n + 1):
    is_highest = candidates.get(i, True)
    if is_highest:
        ans += 1

print(ans)

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

candidates = {}
for i in range(m):
    x, y = map(int, input().split(" "))

    if h[x - 1] <= h[y -1]:
        candidates[x] = False
    if h[x - 1] >= h[y -1]:
        candidates[y] = False

ans = 0
for i in range(1, n + 1):
    is_highest = candidates.get(i, True)
    if is_highest:
        ans += 1

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

Fixed code:
n,m=map(int,input().split())
h=list(map(int,input().split()))
tall=[0]*n
for i in range(m):
  a,b=map(int,input().split())
  a-=1
  b-=1
  tall[a]=max(tall[a],h[b])
  tall[b]=max(tall[b],h[a])
res=0
for i in range(n):
  if h[i]>tall[i]:
    res+=1
print(res)
Buggy code:

i = list(map(int, input().split())) 
j = list(map(int, input().split())) 

lis=[]
ans = 0
for a in range (i[0]):
    tendata=[a+1,j[a],0,]
    lis.append(tendata)

for b in range(i[1]):
    miti = list(map(int, input().split()))
    if ((lis[miti[0]-1][1]) > (lis[miti[1]-1][1])):
        lis[miti[1]-1][2] = 1
    else:
        lis[miti[0]-1][2] = 1

print(lis)
for c in  lis:
    if not (c[2] == 1 ):
        ans = ans+1
        

print(ans)

Fixed code:


i = list(map(int, input().split())) 
j = list(map(int, input().split())) 

lis=[]
ans = 0
for a in range (i[0]):
    tendata=[a+1,j[a],0]
    lis.append(tendata)

for b in range(i[1]):
    miti = list(map(int, input().split()))
    if ((lis[miti[0]-1][1]) > (lis[miti[1]-1][1])):
        lis[miti[1]-1][2] = 1
    
    elif ((lis[miti[0]-1][1]) == (lis[miti[1]-1][1])):
        lis[miti[1]-1][2] = 1
        lis[miti[0]-1][2] = 1

    else:
        lis[miti[0]-1][2] = 1

for c in  lis:
    if not (c[2] == 1 ):
        ans = ans+1

print(ans)
Buggy code:
import collections
n,m = (int(i) for i in input().split())
h = [int(i) for i in input().split()]
ab =[[0]]*n
print(ab)
for _ in range(m):
	a,b = (int(i) for i in input().split())
	if h[a-1]-h[b-1]>0:
		ab[b-1]=["a"]

	elif h[a-1]-h[b-1]<0:
		ab[a-1]=["a"]

	else:
		ab[a-1]=["a"]
		ab[b-1]=["a"]


print(ab.count([0]))

Fixed code:
import collections
n,m = (int(i) for i in input().split())
h = [int(i) for i in input().split()]
ab =[[0]]*n

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

	elif h[a-1]-h[b-1]<0:
		ab[a-1]=["a"]

	else:
		ab[a-1]=["a"]
		ab[b-1]=["a"]


print(ab.count([0]))
Buggy code:
n,m = map(int, input().split())
H = [int(a) for a in input().split()]
ans= [1] * n
for i 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[a-1] = 0
#         ans[b-1] = 0
    elif H[a-1] < H[b-1]:
        ans[a-1] = 0
print(sum(ans))

Fixed code:
n,m = map(int, input().split())
H = [int(a) for a in input().split()]
ans= [1] * n
for i 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[a-1] = 0
        ans[b-1] = 0
    elif H[a-1] < H[b-1]:
        ans[a-1] = 0
print(sum(ans))