MOD = 998244353
from collections import defaultdict

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

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

for i in range(n):
    next_dp = defaultdict(int)
    c = s[i]
    replacements = []
    if c == '.':
        replacements = ['(', ')', '?']
    else:
        replacements = [c]
    
    for (lo_prev, hi_prev), count in current_dp.items():
        for char in replacements:
            if char == '(':
                new_lo = lo_prev + 1
                new_hi = hi_prev + 1
            elif char == ')':
                new_lo = lo_prev - 1
                new_hi = hi_prev - 1
            else:
                new_lo = lo_prev - 1
                new_hi = hi_prev + 1
            
            new_lo_clamped = max(new_lo, 0)
            if new_hi >= new_lo_clamped:
                next_dp[(new_lo_clamped, new_hi)] = (next_dp[(new_lo_clamped, new_hi)] + count) % MOD
    
    current_dp = next_dp

result = 0
for (lo, hi), cnt in current_dp.items():
    if lo <= 0 <= hi:
        result = (result + cnt) % MOD

print(result)