MOD = 998244353

s = input().strip()
n = len(s)

if n % 2 != 0:
    print(0)
    exit()

from collections import defaultdict

dp = defaultdict(int)
dp[(0, 0)] = 1

for char in s:
    new_dp = defaultdict(int)
    for (min_prev, max_prev), cnt in dp.items():
        chars = []
        if char == '.':
            chars = ['(', ')', '?']
        else:
            chars = [char]
        for c in chars:
            if c == '(':
                new_min = min_prev + 1
                new_max = max_prev + 1
            elif c == ')':
                new_min = min_prev - 1
                new_max = max_prev - 1
            else:  # '?'
                new_min = min_prev - 1
                new_max = max_prev + 1
            new_min = max(new_min, 0)
            if new_max < 0:
                continue
            new_dp[(new_min, new_max)] = (new_dp[(new_min, new_max)] + cnt) % MOD
    dp = new_dp

total = 0
for (min_bal, max_bal), cnt in dp.items():
    if min_bal <= 0 <= max_bal:
        total = (total + cnt) % MOD

print(total % MOD)