# 各数字ごとに、各桁に何回出るか考える、寄与分

N = int(input())
C = [0] + list(map(int, input().split()))
mod = 10**9+7

# nCrメモ化パッケージ
factorial = [1] #0分
inverse = [1] #0分
for i in range(1, N+1):
    factorial.append(factorial[-1]*i%mod)
    inverse.append(pow(factorial[-1], mod-2, mod))
    
def nCr_fast(N, R, MOD):
    if N < R or R < 0:
        return 0
    elif R == 0 or R == N:
        return 1
    return factorial[N]*inverse[R]*inverse[N-R]%MOD

total = 1
N_remainder = N
for i in range(1, 10):
    if C[i] > 0:
        total *= nCr_fast(N_remainder, C[i], mod)
        total %= mod
        N_remainder -= C[i]

nCr_list = [0]
for i in range(1, 10):
    calc = total*C[i]//N
    nCr_list.append(calc)

ans = 0
for d in range(N):
    for i in range(10):
        ans += i*nCr_list[i]*(10**d)
        ans %= mod
print(ans%mod)