MOD = 998244353 def main(): import sys input = sys.stdin.read data = input().split() N = int(data[0]) M = 2 k = int(data[2]) Cs = list(map(int, data[3:3+k])) # Precompute the total_sequences max_sum = 2 * N + 6 dp = [0] * (max_sum + 1) dp[0] = 1 total_sequences = 0 for s in range(0, 2 * N): current = dp[s] if current == 0: continue for D in range(1, 7): new_s = s + D if new_s >= 2 * N: total_sequences = (total_sequences + current) % MOD else: dp[new_s] = (dp[new_s] + current) % MOD dp[s] = 0 # Process each query Ci for Ci in Cs: forbidden_count = 0 F0 = [0] * N F1 = [0] * N F0[0] = 1 for s in range(N): current = F0[s] if current == 0: continue for D in range(1, 7): new_s = s + D if new_s >= 2 * N: forbidden_count = (forbidden_count + current) % MOD else: if new_s < N: if new_s != Ci: F0[new_s] = (F0[new_s] + current) % MOD else: new_b = new_s - N if new_b != Ci: F1[new_b] = (F1[new_b] + current) % MOD for b in range(N): current = F1[b] if current == 0: continue s_in_a1 = N + b for D in range(1, 7): new_s = s_in_a1 + D if new_s >= 2 * N: forbidden_count = (forbidden_count + current) % MOD else: new_b = b + D if new_b != Ci: F1[new_b] = (F1[new_b] + current) % MOD ans = (total_sequences - forbidden_count) % MOD print(ans) if __name__ == '__main__': main()