import sys

# sys.setrecursionlimit(5000006)
# sys.set_int_max_str_digits(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()

dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = -1-(-1 << 31)
# inf = -1-(-1 << 62)

# md = 10**9+7
md = 998244353

def mex(a,b):
    for i in range(3):
        if i!=a and i!=b:
            return i

s=SI()
k=II()
n=len(s)

l2r=[-1]*n
st=[]
for i,c in enumerate(s):
    if c=="m":
        st.append(i)
    if c==")":
        j=st.pop()
        l2r[j]=i+1

st=[(0,n)]
dp={}
while st:
    l,r=st.pop()
    if r-l==1:
        if s[l]=="?":
            dp[l,r]=[1,1,1]
        else:
            a=int(s[l])
            dp[l,r]=[0,0,0]
            dp[l,r][a]=1
    else:
        m=l2r[l+4]
        if m==-1:m=l+5
        if (l+4, m) in dp:
            cur=[0]*3
            if s[l+1]!="a":
                for a in range(3):
                    for b in range(3):
                        cur[mex(a,b)]+=dp[l+4,m][a]*dp[m+1,r-1][b]%md
            if s[l+1]!="e":
                for a in range(3):
                    for b in range(3):
                        cur[max(a,b)]+=dp[l+4,m][a]*dp[m+1,r-1][b]%md
            for i in range(3):cur[i]%=md
            dp[l,r]=cur
        else:
            st+=[(l,r),(l+4,m),(m+1,r-1)]

print(dp[0,n][k])