N,M = map(int,input().split())

P = 998244353
C = N + 50
fact = [1] * C
fact_inv = [1] * C
for i in range(2,C):
    fact[i] = fact[i-1] * i % P
fact_inv[-1] = pow(fact[-1],P-2,P)
for i in range(C-2,1,-1):
    fact_inv[i] = fact_inv[i + 1] * (i + 1) % P

K = 31
dp = [0] * K

same = 0
now = 0
for i in range(29,-1,-1):
    nx = [0] * K
    mask = 1 << i
    same |= M & mask
    for k in range(K):
        nx[k] = dp[k]
    for k in range(K-1):
        nx[k+1] += dp[k]
    if M & mask:
        nx[now] += 1
        now += 1
    for k in range(K):
        nx[k] %= P
    dp = nx
dp[now] += 1

comb = [[0] * K for _ in range(K)]
for n in range(K):
    for k in range(K):
        comb[n][k] = fact[n] * fact_inv[k] * fact_inv[n-k] % P
def calc(k):
    dp = [0] * (k + 1)
    dp[0] = 1
    for _ in range(N):
        nx = [0] * (k + 1)
        for i in range(k +  1):
            for j in range(k + 1 - i):
                nx[i + j] += dp[i] * comb[k-i][j]
                nx[i+j] %= P
        dp = nx
    return dp[-1]

ans = 0
for k in range(K):
    ans += dp[k] * calc(k) % P
    ans %= P

print(ans)