def per(n: int, r: list, mod: int):
    """同じものを含む順列の計算"""
    global fact, factinv
    num = fact[n]
    for i in r:
        if i:
            num *= factinv[i]
            num %= mod
    return num


n = int(input())
c = list(map(int, input().split()))
mod = 10**9 + 7

# n までのそれぞれの階乗計算（mod 含む）
fact = [1, 1]
factinv = [1, 1]
for i in range(2, n+1):
    fact.append(fact[-1] * i % mod)
    factinv.append(pow(fact[-1], mod - 2, mod))

cnt = 0
for i in range(9):
    check = False
    if c[i]:
        c[i] -= 1
        cnt += per(n - 1, c, mod) * (i + 1) % mod
        c[i] += 1
# print(cnt)

ans = 0
for i in range(n):
    ans += cnt * pow(10, i, mod)
    ans %= mod
print(ans)