## https://yukicoder.me/problems/no/1353

MOD = 998244353


def main():
    N, L, R = map(int, input().split())
    A = list(map(int, input().split()))

    answer = 0
    dp = [[0] * (N + 1) for _ in range(R + 1)]
    dp[0][0] = 1
    cum_dp_table = [[[0] for _ in range(max(1, n))] for n in range(N + 1)]
    for n in range(1, N + 1):
        cum_dp_table[n][0].append(dp[0][0])

    for r in range(1, R + 1):
        for n in range(1, N + 1):
            target_array = cum_dp_table[n][r % n]

            if 1 + A[n - 1] <= len(target_array):
                dp[r][n] += (target_array[-1] - target_array[-1- A[n - 1]]) % MOD
            else:
                dp[r][n] += target_array[-1]
            dp[r][n] %= MOD

        cum_dp = 0
        for n in range(1, N + 1):
            cum_dp += dp[r][n]
            cum_dp %= MOD

        for n in range(1, N + 1):
            x = cum_dp_table[n][r % n][-1]
            y = (cum_dp - dp[r][n]) % MOD
            cum_dp_table[n][r % n].append((x + y) % MOD)



    answer = 0
    for r in range(L, R + 1):
        for l in range(1, N + 1):
            answer += dp[r][l]
            answer %= MOD

    print(answer)



if __name__ == "__main__":
    main()