using System;
using System.IO;
using System.Collections.Generic;

namespace No556
{
    public class Program
    {
        void Solve(StreamScanner ss, StreamWriter sw)
        {
            //---------------------------------
            var N = ss.Next(int.Parse);
            var M = ss.Next(int.Parse);

            var uf = new UnionFind(N + 1);
            for (var i = 0; i < M; i++)
            {
                var A = ss.Next(int.Parse);
                var B = ss.Next(int.Parse);

                if (uf.Root(A) > uf.Root(B)) MathX.Swap(ref A, ref B);
                uf.Unite(A, B);
            }

            for (var i = 1; i <= N; i++)
            {
                sw.WriteLine(uf.Root(i));
            }
            //---------------------------------
        }

        static void Main()
        {
            var ss = new StreamScanner(new StreamReader(Console.OpenStandardInput()));
            var sw = new StreamWriter(Console.OpenStandardOutput()) {AutoFlush = false};
            new Program().Solve(ss, sw);
            sw.Flush();
        }
    }

    public static partial class MathX
    {
        public static void Swap<T>(ref T left, ref T right)
        {
            var tmp = left;
            left = right;
            right = tmp;
        }
    }

    public class UnionFind
    {
        readonly int[] p;

        public UnionFind(int n)
        {
            p = new int[n];
            for (var i = 0; i < n; i++) p[i] = -1;
        }

        public int Root(int x)
        {
            return p[x] < 0 ? x : (p[x] = Root(p[x]));
        }

        public bool IsSameSet(int x, int y)
        {
            return Root(x) == Root(y);
        }

        public bool Unite(int x, int y)
        {
            x = Root(x);
            y = Root(y);
            if (x == y) return false;

            if (p[x] > p[y])
            {
                var t = x;
                x = y;
                y = t;
            }

            p[x] += p[y];
            p[y] = x;
            return true;
        }

        public int Size(int x)
        {
            return -p[Root(x)];
        }
    }

    public class StreamScanner
    {
        static readonly char[] Sep = {' '};
        readonly Queue<string> buffer = new Queue<string>();
        readonly TextReader textReader;

        public StreamScanner(TextReader textReader)
        {
            this.textReader = textReader;
        }

        public T Next<T>(Func<string, T> parser)
        {
            if (buffer.Count != 0) return parser(buffer.Dequeue());
            var nextStrings = textReader.ReadLine().Split(Sep, StringSplitOptions.RemoveEmptyEntries);
            foreach (var nextString in nextStrings) buffer.Enqueue(nextString);
            return Next(parser);
        }

        public T[] Next<T>(Func<string, T> parser, int x)
        {
            var ret = new T[x];
            for (var i = 0; i < x; ++i) ret[i] = Next(parser);
            return ret;
        }

        public T[][] Next<T>(Func<string, T> parser, int x, int y)
        {
            var ret = new T[y][];
            for (var i = 0; i < y; ++i) ret[i] = Next(parser, x);
            return ret;
        }
    }
}