Buggy python submission (verdict: Time Limit Exceeded):
from functools import reduce
from itertools import permutations

def f(s):
    while True:
        t = s.replace('()', '')
        if t == s:
            return s
        s = t

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

l = 0
r = 0
for s in S:
    t = s.count('(')
    l += t
    r += len(s) - t
if l != r:
    print('No')
    exit()

S = [s for s in map(f, S) if s != ""]

if len(S) == 0:
    print('Yes')
    exit()

lS = [s for s in S if s[0] == "("]
rS = [s for s in S if s[0] == ")"]

ld = {}
for s in lS:
    ld.setdefault(s, 0)
    ld[s] += 1

rd = {}
for s in rS:
    rd.setdefault(s, 0)
    rd[s] += 1

for k1 in list(ld.keys()):
    k2 = k1[::-1]
    if k2 in rd:
        t = max(ld[k1], rd[k2])
        ld[k1] -= t
        rd[k2] -= t

if len(ld) == 0 and len(rd) == 0:
    print('Yes')
    exit()

SS = []
for k in ld:
    for i in range(ld[k]):
        SS.append(k)
for k in rd:
    for i in range(rd[k]):
        SS.append(k)

for ss in permutations(SS, len(SS)):
    t = reduce(lambda x, y: x + y, ss)
    if f(t) == '':
        print('Yes')
        exit()
print('No')


Fixed submission:
def scan(s):
    m = 0
    a = 0
    for c in s:
        if c == '(':
            a += 1
        elif c == ')':
            a -= 1
        m = min(m, a)
    return m, a


def key(v):
    m, a = v
    if a >= 0:
        return 1, m, a
    else:
        return -1, a - m, a

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

c = 0
for m, a in sorted([scan(s) for s in S], reverse=True, key=key):
    if c + m < 0:
        c += m
        break
    c += a

if c == 0:
    print('Yes')
else:
    print('No')

Buggy python submission (verdict: Runtime Error):
from functools import reduce
from itertools import permutations

def f(s):
    while True:
        t = s.replace('()', '')
        if t == s:
            return s
        s = t

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

l = 0
r = 0
for s in S:
    t = s.count('(')
    l += t
    r += len(s) - t
if l != r:
    print('No')
    exit()

S = [s for s in map(f, S) if s != ""]

if len(S) == 0:
    print('Yes')
    exit()

lS = [s for s in S if s[0] == "("]
rS = [s for s in S if s[0] == ")"]

ld = {}
for s in lS:
    ld.setdefault(s, 0)
    ld[s] += 1

rd = {}
for s in rS:
    rd.setdefault(s, 0)
    rd[s] += 1

for k1 in ld:
    for k2 in rd.keys():
        if f(k1 + k2) != '':
            continue
        t = max(ld[k1], rd[k2])
        ld[k1] -= t
        rd[k2] -= t

if len(ld) == 0 and len(rd) == 0:
    print('Yes')
    exit()

SS = []
for k in ld:
    for i in range(ld[k]):
        SS.append(k)
for k in rd:
    for i in range(rd[k]):
        SS.append(k)

for ss in permutations(SS, len(SS)):
    t = reduce(lambda x, y: x + y, ss)
    if f(t) == '':
        print('Yes')
        exit()
print('No')


Fixed submission:
def scan(s):
    m = 0
    a = 0
    for c in s:
        if c == '(':
            a += 1
        elif c == ')':
            a -= 1
        m = min(m, a)
    return m, a


def key(v):
    m, a = v
    if a >= 0:
        return 1, m, a
    else:
        return -1, a - m, a

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

c = 0
for m, a in sorted([scan(s) for s in S], reverse=True, key=key):
    if c + m < 0:
        c += m
        break
    c += a

if c == 0:
    print('Yes')
else:
    print('No')