#include <iostream>
#include <vector>
#include <cmath>
#include <map>
#include <set>
#include <iomanip>
#include <queue>
#include <algorithm>
#include <numeric>
#include <deque>

using namespace std;

const long long modc=998244353, MAX=1000000;
vector<long long> f, finv;

long long inv(long long x){
    long long ans = 1, e = modc-2;
    x %= modc;

    while (e > 0){
        if ((e & 1LL)) ans = (ans * x) % modc;
        e = e >> 1LL;
        x = (x*x) % modc;
    }

    return ans;
}


void init(){
    f.resize(MAX+1); finv.resize(MAX+1);
    f[0] = 1;
    for (int i=1; i<=MAX; i++) f[i] = (f[i-1]*i) % modc;
    finv[MAX] = inv(f[MAX]);
    for (int i=MAX-1; i>=0; i--) finv[i] = (finv[i+1] * (i+1)) % modc;
}

long long C(long long n, long long k){ 
    if (n < k || k < 0) return 0;

    return (((f[n] * finv[k]) % modc) * finv[n-k]) % modc;
}

int main(){

    init();
    long long N, M, ans=0;
    cin >> N >> M;
    vector<long long> A(N+1);
    for (int i=0; i<N; i++) cin >> A[i+1];
    vector<vector<long long>> dp(N+1, vector<long long>(M+1, 1e18));
    dp[0][0] = 0;

    for (int i=1; i<=N; i++){
        for (int j=0; j<=M; j++){
            dp[i][j] = min(dp[i][j], dp[i-1][j]);
            if (j-A[i]>=0) dp[i][j] = min(dp[i][j], dp[i][j-A[i]]+1);
        }
    }

    for (long long i=0; i<=M; i++){
        ans += C(M-dp[N][i], i-dp[N][i]);
        ans %= modc;
    }

    cout << ans << endl;

    return 0;
}