N,M = map(int,input().split())
A = list(map(int,input().split()))
A.sort()
MOD = 998244353
fact = [1] * (M+1)
factr = [1] * (M+1)
for i in range(2,M+1):
    fact[i] = (i * fact[i-1])%MOD
    factr[i] = (factr[i-1] * pow(i,MOD-2,MOD))%MOD
INF = 10 ** 6
dp=[INF] * (M+1)
dp[0] = 0
kset = {0}
kset2 = set()
i = 1
while kset:
    for k in kset:
        for a in A:
            k2 = k + a
            if k2 <=  M:
                if dp[k2] == INF:
                    dp[k2] = i
                    kset2.add(k2)
            else:
                break
    kset,kset2 = kset2,kset
    kset2 = set()
    i += 1
ans = 0
for i in range(M+1):
    if dp[i] != INF:
        M2 = M - dp[i]
        ans += fact[M2] * factr[M2 - i + dp[i]] * factr[i - dp[i]]
        ans %= MOD
print(ans)