Buggy python submission (verdict: Runtime Error):
import collections
num_list = [int(i) for i in input().split()]
height_list = [int(i) for i in input().split()]
way_list = list(list(map(int, input().split())) for i in range(num_list[1]))

tower_list = [i for i in range(1, num_list[0]+1)]
gd_dict = dict(zip(tower_list, ['good' for i in range(10**5)]))

def change_to_bad(target_list):
    if height_list[target_list[0]] > height_list[target_list[1]]:
        gd_dict[target_list[1]] = 'bad'
    elif height_list[target_list[0]] == height_list[target_list[1]]:
        gd_dict[target_list[0]] = 'bad'
        gd_dict[target_list[1]] = 'bad'
    else:
        gd_dict[target_list[0]] = 'bad'

for i in way_list:
    change_to_bad(i)

good_val = collections.Counter(gd_dict.values())['good']

good_val

Fixed submission:
import collections
num_list = [int(i) for i in input().split()]
height_list = [int(i) for i in input().split()]
way_list = list(list(map(int, input().split())) for i in range(num_list[1]))

tower_list = [i for i in range(1, num_list[0]+1)]
gd_dict = dict(zip(tower_list, ['good' for i in range((len(tower_list)))]))

def change_to_bad(target_list):
    if height_list[target_list[0]-1] > height_list[target_list[1]-1]:
        gd_dict[target_list[1]] = 'bad'
    elif height_list[target_list[0]-1] == height_list[target_list[1]-1]:
        gd_dict[target_list[0]] = 'bad'
        gd_dict[target_list[1]] = 'bad'
    else:
        gd_dict[target_list[0]] = 'bad'

for i in way_list:
    change_to_bad(i)

good_val = collections.Counter(gd_dict.values())['good']

print(good_val)

Buggy python submission (verdict: Time Limit Exceeded):
num_list = [int(i) for i in input().split()]
height_list = [int(i) for i in input().split()]
way_list = list(list(map(int, input().split())) for i in range(num_list[1]))
ans_cnt = 0
# 道がある塔を確認（道がない場合は無条件でgood）
check_tower_list = []
for i in way_list:
    check_tower_list += i
check_tower_set = set(check_tower_list)

good_tower = set(i+1 for i in range(len(height_list))) - check_tower_set
ans_cnt += len(good_tower)

# check_tower_setの塔のみbad_dictを作成
bad_dict = {tower_num:
            [v+1 for v in range(len(height_list)) if height_list[v] >= height_list[tower_num-1] and tower_num != v+1
            ] for tower_num in check_tower_set
           }

for tower_num in bad_dict.keys():
    check_way_list = []
    for way_val in way_list:
        if tower_num in way_val:
            check_way_list += way_val
        else:
            pass
        check_way_set = set(check_way_list)

    if len(check_way_set & set(bad_dict[tower_num])) == 0:
        ans_cnt += 1
    else:
        pass
print(ans_cnt)

Fixed submission:
import collections
num_list = [int(i) for i in input().split()]
height_list = [int(i) for i in input().split()]
way_list = list(list(map(int, input().split())) for i in range(num_list[1]))

tower_list = [i for i in range(1, num_list[0]+1)]
gd_dict = dict(zip(tower_list, ['good' for i in range((len(tower_list)))]))

def change_to_bad(target_list):
    if height_list[target_list[0]-1] > height_list[target_list[1]-1]:
        gd_dict[target_list[1]] = 'bad'
    elif height_list[target_list[0]-1] == height_list[target_list[1]-1]:
        gd_dict[target_list[0]] = 'bad'
        gd_dict[target_list[1]] = 'bad'
    else:
        gd_dict[target_list[0]] = 'bad'

for i in way_list:
    change_to_bad(i)

good_val = collections.Counter(gd_dict.values())['good']

print(good_val)