Buggy python submission (verdict: Runtime Error):
N, M = map(int,input().split())
H = list(map(int,input().split()))

A = []
B = []
cmb = {}
cnt = 0
flag = 1
ma = [0]*N

for i in range(M):
	a,b = map(int,input().split())

	cmb.setdefault(i, [])
	cmb.setdefault(a-1, []).append(b-1)
	cmb.setdefault(b-1, []).append(a-1)

	ma[a-1] = max(ma[a-1], H[b-1])
	ma[b-1] = max(ma[b-1], H[a-1])
# print(cmb)

for j in range(N):
	# print("展望台:", j)
	k = list(set(cmb[j]))
	# print(k)
	if len(cmb[j])==0:
		# print('正しく分岐')
		cnt+=1
	else:
		# print(H[j], '>', ma[j])

		if H[j] > ma[j]:
			# print('GOOD')
			cnt += 1
print(cnt)

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

A = []
B = []
cmb = {}
cnt = 0
flag = 1
ma = [0]*N

for i in range(M):
	a,b = map(int,input().split())

	cmb.setdefault(i, [])
	cmb.setdefault(a-1, []).append(b-1)
	cmb.setdefault(b-1, []).append(a-1)

	ma[a-1] = max(ma[a-1], H[b-1])
	ma[b-1] = max(ma[b-1], H[a-1])
# print(cmb)

for j in range(N):
	# # print("展望台:", j)
	# k = list(set(cmb[j]))
	# # print(k)
	# if len(cmb[j])==0:
	# 	# print('正しく分岐')
	# 	cnt +=1
	# else:
	# 	# print(H[j], '>', ma[j])

	if H[j] > ma[j]:
		# print('GOOD')
		cnt += 1
print(cnt)

Buggy python submission (verdict: Runtime Error):
N, M = map(int,input().split())
H = list(map(int,input().split()))

A = []
B = []
cmb = {}
cnt = 0
flag = 1

for i in range(1, M+1):
	cmb.setdefault(i, [])


for i in range(M):
	a,b = map(int,input().split())

	cmb.setdefault(a, []).append(b)
	cmb.setdefault(b, []).append(a)

for j in range(1,N+1):
	if len(cmb[j])==0:
		cnt  += 1
	else:
		k = list(set(cmb[j]))
		flag = 1
		for i in range(len(k)):
			if H[j-1] <= H[k[i]]:
				flag = 0
				break;

		if flag  == 1:
			cnt += 1
print(cnt-1)

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

A = []
B = []
cmb = {}
cnt = 0
flag = 1
ma = [0]*N

for i in range(M):
	a,b = map(int,input().split())

	cmb.setdefault(i, [])
	cmb.setdefault(a-1, []).append(b-1)
	cmb.setdefault(b-1, []).append(a-1)

	ma[a-1] = max(ma[a-1], H[b-1])
	ma[b-1] = max(ma[b-1], H[a-1])
# print(cmb)

for j in range(N):
	# # print("展望台:", j)
	# k = list(set(cmb[j]))
	# # print(k)
	# if len(cmb[j])==0:
	# 	# print('正しく分岐')
	# 	cnt +=1
	# else:
	# 	# print(H[j], '>', ma[j])

	if H[j] > ma[j]:
		# print('GOOD')
		cnt += 1
print(cnt)

Buggy python submission (verdict: Runtime Error):
N, M = map(int,input().split())
H = list(map(int,input().split()))

A = []
B = []
cmb = {}
cnt = 0
flag = 1

for i in range(1, M+1):
	cmb.setdefault(i, [])


for i in range(M):
	a,b = map(int,input().split())

	cmb.setdefault(a, []).append(b)
	cmb.setdefault(b, []).append(a)

for j in range(1,N+1):
	if len(cmb[j])==0:
		cnt  += 1
	else:
		k = list(set(cmb[j]))
		flag = 1
		for i in range(len(k)):
			print(j)
			if H[j-1] <= H[k[i]]:
				flag = 0
				break;

		if flag  == 1:
			cnt += 1
print(cnt-1)

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

A = []
B = []
cmb = {}
cnt = 0
flag = 1
ma = [0]*N

for i in range(M):
	a,b = map(int,input().split())

	cmb.setdefault(i, [])
	cmb.setdefault(a-1, []).append(b-1)
	cmb.setdefault(b-1, []).append(a-1)

	ma[a-1] = max(ma[a-1], H[b-1])
	ma[b-1] = max(ma[b-1], H[a-1])
# print(cmb)

for j in range(N):
	# # print("展望台:", j)
	# k = list(set(cmb[j]))
	# # print(k)
	# if len(cmb[j])==0:
	# 	# print('正しく分岐')
	# 	cnt +=1
	# else:
	# 	# print(H[j], '>', ma[j])

	if H[j] > ma[j]:
		# print('GOOD')
		cnt += 1
print(cnt)