using System;
using System.Collections.Generic;
using System.Linq;

// https://yukicoder.me/problems/no/2562
class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("3");
            WillReturn.Add("7");
            WillReturn.Add("1 0 0 1 0 0 0 0 0");
            WillReturn.Add("1");
            WillReturn.Add("0 0 0 0 0 0 0 0 9");
            WillReturn.Add("998244353");
            WillReturn.Add("0 1 2 2 1 0 0 1 2");
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();

        for (int I = 1; I <= InputList.Count - 1; I += 2) {
            decimal M = decimal.Parse(InputList[I]);
            decimal[] DArr = InputList[I + 1].Split(' ').Select(pX => decimal.Parse(pX)).ToArray();
            decimal Answer = Solve(M, DArr);
            Console.WriteLine(Answer);
        }
    }

    static decimal Solve(decimal pM, decimal[] pDArr)
    {
        decimal Answer = pM;
        decimal Omomi = 1000000000;
        for (int I = 0; I <= pDArr.GetUpperBound(0); I++) {
            for (int J = 1; J <= pDArr[I]; J++) {
                Answer += Omomi * (I + 1);
                Omomi *= 10;
            }
        }
        return Answer;
    }
}