## https://yukicoder.me/problems/no/1632

MOD = 10 ** 9 + 7

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

    # C > 0となるものが一つしかない場合は
    cnt = 0
    cnt_i = -1
    for i in range(9):
        if C[i] > 0:
            cnt += 1
            cnt_i = i + 1
    if cnt == 1:
        ans = 0
        for _ in range(C[cnt_i - 1]):
            ans *= 10
            ans %= MOD
            ans += cnt_i
            ans %= MOD
        print(ans)
    else:
        # 9で割れるか?
        mods = 1

        nine_check = 0
        for i in range(9):
            nine_check += (i + 1) * C[i]
        if nine_check % 9 == 0:
            mods *= 9
        elif nine_check % 3 == 0:
            mods *= 3

        four_check = True
        for i in range(9):
            if (i + 1) % 4 != 0 and C[i] > 0:
                four_check = False
                break
        two_check = True
        for i in range(9):
            if (i + 1) % 2 != 0 and C[i] > 0:
                two_check = False
                break
        
        if four_check:
            mods *= 4
        elif two_check:
            mods *= 2

        print(mods)




        










if __name__ == "__main__":
    main()