from math import gcd
import itertools

MOD = 10**9 + 7


n = int(input())
A = list(map(int, input().split()))
if max(A) == n:
    c = A.index(n) + 1
    ans = (pow(10, n, MOD * 9) - 1) // 9 * c
    print(ans % MOD)
elif n <= 5:
    C = []
    for i, a in enumerate(A, 1):
        C += [i] * a
    G = []
    for P in itertools.permutations(C):
        x = 0
        for p in P:
            x = 10 * x + p
        G.append(x)
    x = G[0]
    for g in G:
        x = gcd(x, g)
    print(x)
else:
    G = []
    for i in range(1, 10):
        for j in range(i + 1, 10):
            if A[i - 1] > 0 and A[j - 1] > 0:
                G.append((10 * j + i) - (10 * i + j))
                G.append((100 * j + i) - (100 * i + j))
                G.append((1000 * j + i) - (1000 * i + j))
    x = G[0]
    for g in G:
        x = gcd(x, g)

    ans = 1
    for i in range(2, x + 1):
        if x % i != 0:
            continue
        tot = 0
        ten = 1
        mod = i
        for j, a in enumerate(A, 1):
            tot += ten * (pow(10, a, mod) - 1) // 9 * j
            tot %= mod
            ten *= pow(10, a, mod)
            ten %= mod

        if tot == 0:
            ans = i
    print(ans)