import sys

int1 = lambda x: int(x) - 1

# input = lambda: sys.stdin.buffer.readline()
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
i1 = lambda: int1(input())
mi = lambda: map(int, input().split())
mi1 = lambda: map(int1, input().split())
li = lambda: list(mi())
li1 = lambda: list(mi1())
lli = lambda n: [li() for _ in range(n)]

INF = float("inf")
# mod = int(1e9 + 7)
mod = 998244353

s = input()
l = [0, 0, 0]
t = "01?"
r = [s.count(c) for c in t]
n = len(s)
p2 = [1] * n
for i in range(n - 1):
    p2[i + 1] = p2[i] * 2 % mod
ans = 0
for c in s:
    r[t.index(c)] -= 1
    le = (l[0] * p2[l[2]] + l[2] * p2[l[2] - 1]) % mod
    ri = (r[0] * p2[r[2]] + r[2] * p2[r[2] - 1]) % mod
    if c != "0":
        ans = (ans + le * ri) % mod
    l[t.index(c)] += 1
print(ans)