using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var a = NList;
        var set = new HashSet<string>();
        var list = new List<char>();
        for (var i = 0; i < 9; ++i)
        {
            for (var j = 0; j < a[i]; ++j) list.Add((char)(i + '1'));
        }
        var ans = 0L;
        Permutate(list.ToArray(), arr =>
        {
            var s = string.Concat(arr);
            if (set.Add(s)) ans += int.Parse(s);
        });
        WriteLine(ans % 1_000_000_007);
    }
    static void Permutate<T>(T[] array, Action<T[]> action)
    {
        Permutate(array, 0, array.Length, action);
    }
    static void Permutate<T>(T[] array, int pos, int count, Action<T[]> action)
    {
        if (count == 0)
        {
            action(array);
            return;
        }
        for (var i = 0; i < count; i++)
        {
            Swap(array, pos, pos + i);
            Permutate(array, pos + 1, count - 1, action);
            Swap(array, pos, pos + i);
        }
    }
    static void Swap<T>(T[] array, int x, int y)
    {
        var temp = array[x];
        array[x] = array[y];
        array[y] = temp;
    }
}