#include "bits/stdc++.h"
using namespace std;

using ll = long long;
using P = pair<ll, ll>;
const ll INF = (1LL << 61);
ll mod = 998244353;
ll dp[2010][2010];
signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	ll N, L, R; cin >> N >> L >> R;
	vector<ll>A(N+1); for (int i = 1; i <= N; i++)cin >> A[i];
	vector<ll>sum(R + 1);
	dp[0][0] = 1;
	sum[0] = 1;
	for (int i = 1; i <= R; i++) {
		for (int j = 1; j <= N; j++) {
			for (int k = 1; k * j <= i && k <= A[j]; k++) {
				dp[i][j] += sum[i - k * j]; dp[i][j] %= mod;
				dp[i][j] -= dp[i - k * j][j]; dp[i][j] += mod; dp[i][j] %= mod;
				sum[i] += sum[i - k * j]; sum[i] %= mod;
				sum[i] -= dp[i - k * j][j]; sum[i] += mod; sum[i] %= mod;
			}
		}
	}
	ll ans = 0;
	for (int i = L; i <= R; i++) {
		ans += sum[i];
		ans %= mod;
	}
	cout << ans << endl;
	return 0;
}