using System;
using System.Linq;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Text;
 
public class Program
{
    public void Proc() {
        Reader.IsDebug = false;
        int[] inp = Reader.ReadLine().Split(' ').Select(a=>int.Parse(a)).ToArray();
        int pointCount = inp[0];
        int roadCount = inp[1];

        List<Point> pointList = new List<Point>();
        for(int i=0; i<pointCount; i++) {
            pointList.Add(new Point(i));
        }
        Dictionary<int, Dictionary<int, bool>> road = new Dictionary<int, Dictionary<int, bool>>();

        for(int i=0; i<roadCount; i++) {
            inp = Reader.ReadLine().Split(' ').Select(a=>int.Parse(a)).ToArray();
            if(!road.ContainsKey(inp[0])) {
                road.Add(inp[0], new Dictionary<int, bool>());
            }
            if(!road.ContainsKey(inp[1])) {
                road.Add(inp[1], new Dictionary<int, bool>());
            }
            road[inp[0]].Add(inp[1], false);
            road[inp[1]].Add(inp[0], false);
            
        }

        StringBuilder ans = new StringBuilder();
        for(int i=pointList.Count-1; i>=0; i--) {
            bool must = false;
            if(pointList[i].mustBuy != null) {
                if(pointList[i].mustBuy.Value) {
                    must =  true;
                } else {
                    must = false;
                }
            } else {
                foreach(int key in road[i].Keys) {
                    if(pointList[key].mustBuy != null && pointList[key].mustBuy.Value == false) {
                        must = true;
                        break;
                    }
                }
                pointList[i].mustBuy = must;
            }
            if(must) {
                ans.Append(1);
            } else {
                ans.Append(0);
            }
            if(!pointList[i].mustBuy.Value) {
                foreach(int key in road[i].Keys) {
                    if(pointList[key].mustBuy == null) {
                        pointList[key].mustBuy = true;
                    }
                }
            }
        }
        Console.WriteLine(ans.ToString().TrimStart(new char[]{'0'}));

    }

    private class Point {
        public int ID;
        public Nullable<Boolean> mustBuy = null;
        public Point(int id) {
            this.ID = id;
        }
    }


    public class Reader {
        public static bool IsDebug = true;
        private static System.IO.StringReader SReader;
        private static string InitText = @"


4 5
0 1
0 2
0 3
1 2
2 3


";
        public static string ReadLine() {
            if(IsDebug) {
                if(SReader == null) {
                    SReader = new System.IO.StringReader(InitText.Trim());
                }
                return SReader.ReadLine();
            } else {
                return Console.ReadLine();
            }
        }
    }
    public static void Main(string[] args)
    {
        Program prg = new Program();
        prg.Proc();
    }
}