using System;
using System.Linq;
using System.Collections.Generic;
using static System.Console;
using System.Text;
using System.IO;
using static System.Math;
using System.Numerics;

namespace AtCoder
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
            Solve();
            //Out.Flush();
            Read();
        }

        static void Solve()
        {
            var (N, M) = Slice2<int>();
            Ai = Sarray();
            if (Ai.Contains(2) && (Ai.Contains(3) || Ai.Contains(5))) Ai = Ai.Where(a => a != 2).ToArray();
            if (Ai.Contains(3) && Ai.Contains(5)) Ai = Ai.Where(a => a != 3).ToArray();
            if (Ai.Contains(6) && Ai.Contains(9)) Ai = Ai.Where(a => a != 6).ToArray();
            ktNum = new int[10];
            //最大桁数が出る
            ktDfs(N, 1);
            var keta = ktNum.Sum();

            mxNum = new int[10];
            bsN = odNum.Select((o, i) => (idx: i , num: o)).Where(o => Ai.Contains(o.idx)).OrderBy(oi => oi.num).First().idx;
            var bCst = odNum[bsN];
            odNum = odNum.Select(o => o - bCst).ToArray();
            mxDfs(N - bCst * keta, 9);
            var ans = string.Empty;
            mxNum[bsN] = keta - mxNum.Sum();
            for (var i = 9; 0 <= i; --i)
                ans += new String((char)(i + '0'), mxNum[i]);
            WriteLine(ans);
        }
        static long[] Ai;
        static int[] prOrd = new int[] { 0, 1, 7, 4, 5, 2, 3, 9, 6, 8 };
        static int[] ktNum;

        static int[] odNum = new int[] { 0, 2, 5, 5, 4, 5, 6, 3, 7, 6 };
        static int[] mxNum;
        static int bsN;
        static bool ktDfs(int rem, int no)
        {
            if (rem == 0) return true;
            if (9 < no) return false;
            if (rem < 0) return false;
            var num = prOrd[no];
            if (!Ai.Contains(num)) return ktDfs(rem, no + 1);
            for (var i = rem / odNum[num]; 0 <= i; --i)
            {
                ktNum[num] = i;
                if (ktDfs(rem - i * odNum[num], no + 1)) return true;
            }
            return false;
        }
        static int sig = -1;
        static bool mxDfs(int rem, int no)
        {
            if (rem == 0) return true;
            if (sig < 0 && no == bsN) { sig = 1; no = 1; }
            if (0 < sig && no == bsN) return false;
            if (!Ai.Contains(no)) return mxDfs(rem, no + sig);

            for (var i = rem / odNum[no]; 0 <= i; --i)
            {
                var psig = sig;
                mxNum[no] = i;
                if (mxDfs(rem - i * odNum[no], no + sig)) return true;
                sig = psig;
            }
            return false;
        }

        static long Mod = 998244353;
        static public long[] Sarray() { return ReadLine().Split().Select(long.Parse).ToArray(); }
        static public List<long> Slist() { return ReadLine().Split().Select(long.Parse).ToList(); }
        static public (T1 a, T2 b) Slice<T1, T2>()
        {
            var t = ReadLine().Split();
            return (
            (T1)Convert.ChangeType(t[0], typeof(T1)),
            (T2)Convert.ChangeType(t[1], typeof(T2)));
        }
        static public (T a, T b) Slice2<T>()
        {
            var t = ReadLine().Split();
            return (
            (T)Convert.ChangeType(t[0], typeof(T)),
            (T)Convert.ChangeType(t[1], typeof(T)));
        }
        static public (T a, T b, T c) Slice3<T>()
        {
            var t = ReadLine().Split();
            return (
            (T)Convert.ChangeType(t[0], typeof(T)),
            (T)Convert.ChangeType(t[1], typeof(T)),
            (T)Convert.ChangeType(t[2], typeof(T)));
        }
        static public (T a, T b, T c, T d) Slice4<T>()
        {
            var t = ReadLine().Split();
            return (
            (T)Convert.ChangeType(t[0], typeof(T)),
            (T)Convert.ChangeType(t[1], typeof(T)),
            (T)Convert.ChangeType(t[2], typeof(T)),
            (T)Convert.ChangeType(t[3], typeof(T)));
        }
    }
}

Measured memory_bytes: 28528