import sys
from math import gcd
sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


N = I()
C = [0]+LI()
mod = 10**9+7

for i in range(1,10):
    if C[i] == N:
        ans = pow(10,N,mod)-1
        ans %= mod
        ans *= pow(9,mod-2,mod)
        ans %= mod
        ans *= i
        ans %= mod
        print(ans)
        exit()

a = 0
for i in range(1,10):
    if not C[i]:
        continue
    for j in range(i+1,10):
        if not C[j]:
            continue
        a = gcd(a,9*(j-i))
        
        
def matrix_multiplication_mod(A,B,p):
    l = len(A)
    m = len(B)
    n = len(B[0])
    C = [[0]*n for _ in range(l)]
    for i in range(l):
        for j in range(n):
            C[i][j] = sum((A[i][k]*B[k][j]) % p for k in range(m)) % p
    return C


def matrix_power_mod(A,n,p):
    l = len(A)
    C = [[0] * l for _ in range(l)]
    for i in range(l):
        C[i][i] = 1
    while n > 0:
        if n % 2 == 1:
            C = matrix_multiplication_mod(C,A,p)
        A = matrix_multiplication_mod(A,A,p)
        n >>= 1
    return C


X = [[10,1],[0,1]]
s = 0
r = 0
for i in range(1,10):
    c = C[i]
    b = matrix_power_mod(X,c,a)[0][1]
    s += i*b*pow(10,r,a)
    s %= a
    r += c

ans = gcd(a,s)
print(ans)