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

namespace Contest
{
    class Program
    {
        static void Main(string[] args)
        {
            ARC061.C();
        }
        class ARC061
        {
            public static void C()
            {
                var S = Read.Str().Select(c => c - '0').ToArray();
                var N = S.Length;
                long sum = 0;
                for(int i = 0; i < (1 << (N - 1)); ++i)
                {
                    long current = S[0];
                    for(int j = 1; j < N; ++j)
                    {
                        if (((1 << (j - 1)) & i) > 0)
                        {
                            sum += current;
                            current = S[j];
                        }
                        else
                        {
                            current = 10 * current + S[j];
                        }
                    }
                    sum += current;
                }
                Console.WriteLine(sum);
            }
            public static void D()
            {
                var H = Read.Long();
                var W = Read.Long();
                var N = Read.Int();
                var AB = Read.TupleInt(N);
                Dictionary<int, HashSet<int>> dict = new Dictionary<int, HashSet<int>>();
                foreach(var ab in AB)
                {
                    if (!dict.ContainsKey(ab.Item1 - 1)) { dict.Add(ab.Item1 - 1, new HashSet<int>()); }
                    dict[ab.Item1 - 1].Add(ab.Item2 - 1);
                }

                Func<int,int, int> count = (h, w) =>
                {
                    if (h < 0 || w < 0 || h + 3 > H || w + 3 > W) { return -1; }
                    int c = 0;
                    for (int i = 0; i < 3; ++i)
                    {
                        for (int j = 0; j < 3; ++j)
                        {
                            if (dict.ContainsKey(h + i) && dict[h + i].Contains(w + j))
                            {
                                c++;
                            }
                        }
                    }
                    return c;
                };

                var ans = new long[10];
                var check = new Dictionary<int, HashSet<int>>();
                foreach(var ab in AB)
                {
                    var a = ab.Item1 - 1;
                    var b = ab.Item2 - 1;
                    for(int i = 0; i < 3; ++i)
                    {
                        for(int j = 0; j < 3; ++j)
                        {
                            var h = a - 2 + i;
                            var w = b - 2 + j;
                            if(!check.ContainsKey(h) || !check[h].Contains(w))
                            {
                                var c = count(h, w);
                                if (c > 0) { ans[c]++; }
                                if (!check.ContainsKey(h)) { check.Add(h, new HashSet<int>()); }
                                check[h].Add(w);
                            }
                        }
                    }
                }
                ans[0] = (H - 2) * (W - 2) - ans.Sum();
                for(int i = 0; i < 10; ++i)
                {
                    Console.WriteLine(ans[i]);
                }
            }
        }
        class Util
        {

        }

        static class Read
        {
            static Queue<string> queue = new Queue<string>();
            static void Enqueue() { var ss = Console.ReadLine().Split(' '); foreach (var s in ss) { queue.Enqueue(s); } }
            public static int Int() { if (queue.Count == 0) { Enqueue(); } return Convert.ToInt32(queue.Dequeue()); }
            public static long Long() { if (queue.Count == 0) { Enqueue(); } return Convert.ToInt64(queue.Dequeue()); }
            public static string Str() { if (queue.Count == 0) { Enqueue(); } return queue.Dequeue(); }
            public static int[] IntN() { return Console.ReadLine().Split(' ').Select(s => Convert.ToInt32(s)).ToArray(); }
            public static long[] LongN() { return Console.ReadLine().Split(' ').Select(s => Convert.ToInt64(s)).ToArray(); }
            public static ulong[] ULongN() { return Console.ReadLine().Split(' ').Select(s => Convert.ToUInt64(s)).ToArray(); }
            public static string[] StrN() { return Console.ReadLine().Split(' '); }
            public static Tuple<int, int>[] TupleInt(int n) { List<Tuple<int, int>> list = new List<Tuple<int, int>>(); for (int i = 0; i < n; ++i) { var ab = Read.IntN(); list.Add(new Tuple<int, int>(ab[0], ab[1])); } return list.ToArray(); }
            public static Tuple<long, long>[] TupleLong(int n) { List<Tuple<long, long>> list = new List<Tuple<long, long>>(); for (int i = 0; i < n; ++i) { var ab = Read.LongN(); list.Add(new Tuple<long, long>(ab[0], ab[1])); } return list.ToArray(); }
            public static Tuple<string, string>[] TupleStr(int n) { List<Tuple<string, string>> list = new List<Tuple<string, string>>(); for (int i = 0; i < n; ++i) { var ab = Read.StrN(); list.Add(new Tuple<string, string>(ab[0], ab[1])); } return list.ToArray(); }
            public static Tuple<double, double>[] TupleDouble(int n) { List<Tuple<double, double>> list = new List<Tuple<double, double>>(); for (int i = 0; i < n; ++i) { var ab = Read.LongN(); list.Add(new Tuple<double, double>(ab[0], ab[1])); } return list.ToArray(); }
            public static long[,] LongMatrix(int r, int c)
            {
                var mat = new long[r, c];
                for (int i = 0; i < r; ++i)
                {
                    var x = Read.LongN();
                    for (int j = 0; j < c; ++j)
                    {
                        mat[i, j] = x[j];
                    }
                }
                return mat;
            }
            public static Dictionary<int, HashSet<int>> AdjacencyList(int N, int M, bool isDirectional = false)
            {
                Dictionary<int, HashSet<int>> dict = new Dictionary<int, HashSet<int>>();
                for (int i = 0; i <= N; ++i) { dict.Add(i, new HashSet<int>()); }
                for (int i = 0; i < M; ++i)
                {
                    var ab = Read.IntN(); dict[ab[0]].Add(ab[1]);
                    if (!isDirectional) { dict[ab[1]].Add(ab[0]); }
                }
                return dict;
            }
            public static Dictionary<int, Dictionary<int, long>> AdjacencyListWithWeight(int N, int M)
            {
                Dictionary<int, Dictionary<int, long>> dict = new Dictionary<int, Dictionary<int, long>>();
                for (int i = 0; i <= N; ++i)
                {
                    dict.Add(i, new Dictionary<int, long>());
                }
                for (int i = 0; i < M; ++i)
                {
                    var ab = Read.IntN();
                    dict[ab[0]].Add(ab[1], ab[2]);
                    dict[ab[1]].Add(ab[0], ab[2]);
                }
                return dict;
            }
        }
    }
}


Measured memory_bytes: 13396