import sys

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

fac = [1,1]
for i in range(2,2*10**5+1):
    fac.append((fac[-1]*i) % mod)

a = fac[N]
for i in range(1,10):
    a *= pow(fac[C[i]],mod-2,mod)
    a %= mod
inv_N = pow(N,mod-2,mod)

ans = 0
for i in range(1,10):
    c = C[i]
    b = a * c % mod * inv_N % mod
    ans += b % mod * i % mod
    ans %= mod

x = 0
for _ in range(N):
    x *= 10
    x += 1
    x %= mod

ans *= x
ans %= mod
print(ans)