import sys
sys.setrecursionlimit(10**6)
s=list(input())
n=len(s)
p=int(input())
stack=[]
ktok={}
mod=998244353
def mex(x,y):
    res=set()
    res.add(x)
    res.add(y)
    for i in range(3):
        if i not in res:return i

for i in range(n):
    if s[i]=="(":stack.append(i)
    if s[i]==")":
        j=stack.pop()
        ktok[j]=i

ktot={}
for i in range(n):
    if s[i]=="(":stack.append(i)
    if s[i]==",":
        j=stack.pop()
        ktot[j]=i

def f(l,r):
    if l==r:
        res=[0,0,0]
        if s[l]=="?":
            res[0]=1
            res[1]=1
            res[2]=1
        else:
            res[int(s[l])]=1
        return res
    dp1=f(l+4,ktot[l+3]-1)
    dp2=f(ktot[l+3]+1,r-1)
    res=[0,0,0]
    for i in range(3):
        for j in range(3):
            if s[l+1]=="a" or s[l+1]=="?":
                res[max(i,j)]+=dp1[i]*dp2[j]%mod
                res[max(i, j)]%=mod
            if s[l + 1] == "e" or s[l + 1] == "?":
                res[mex(i, j)] += dp1[i] * dp2[j] % mod
                res[mex(i, j)] %= mod
    return res

print(f(0,n-1)[p])