## https://yukicoder.me/problems/no/2783

MOD = 998244353

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

    # 8枚目を選ぶ
    dp = [[[0 for _ in range(34)] for _ in range(5)] for _ in range(9)]
    dp[0][0][0] = 1
    for i in range(N):
        if "X" in B[i]:
            continue

        new_dp = [[[0 for _ in range(34)] for _ in range(5)] for _ in range(9)]
        a = A[i]
        b = int(B[i])

        for n in range(9):
            for a_score in range(5):
                for b_score in range(34):
                    # 選ばないケース
                    new_dp[n][a_score][b_score] += dp[n][a_score][b_score]
                    new_dp[n][a_score][b_score] %= MOD

                    # 選ぶケース
                    if n + 1 <= 8 and a + a_score <= 4 and b + b_score <= 33:
                        if b == 0:
                            new_dp[n + 1][a + a_score][b + b_score] += dp[n][a_score][b_score]
                            new_dp[n + 1 ][a + a_score][b + b_score] %= MOD
                        else:
                            new_dp[n + 1][a + a_score][b + b_score] += dp[n][a_score][b_score]
                            new_dp[n + 1 ][a + a_score][b + b_score] %= MOD
        dp = new_dp
                            
    
    targets= []
    for i in range(N):
        if "X" in B[i]:
            targets.append((A[i], B[i]))
    
    # 9枚目を選ぶ
    answer = 0
    for a, b in targets:
        b_ = b[:-1]
        if len(b_) == 0:
            b_ = 0
        else:
            b_ = int(b_)

        for a_score in range(5):
            for b_score in range(34):
                if a + a_score == 4 and b_ + b_score == 33:
                    if b_ == 0:
                        answer += dp[-1][a_score][b_score]
                        answer %= MOD
                    else:
                        if a + a_score >= b_score  + b_ - 4:
                            answer += dp[-1][a_score][b_score]
                            answer %= MOD

    print(answer)
        


            








if __name__ == "__main__":
    main()