using static System.Math;
using System;

public class UnionFind
{
    private int[] data;
    public UnionFind(int size)
    {
        data = new int[size];
        for (int i = 0; i < size; i++) data[i] = -1;
    }
    public bool Unite(int x, int y)
    {
        x = Root(x);
        y = Root(y);
        if (x != y)
        {
            if (data[y] < data[x])
            {
                var tmp = y;
                y = x;
                x = tmp;
            }
            data[x] += data[y];
            data[y] = x;
        }
        return x != y;
    }
    public bool IsSameGroup(int x, int y) => Root(x) == Root(y);
    public int Root(int x) => data[x] < 0 ? x : data[x] = Root(data[x]);
    public int getMem(int x) => -data[Root(x)];
}

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var m = int.Parse(line[1]);
        getAns(n, m);
    }
    static void getAns(int n, int m)
    {
        var uf = new UnionFind(n + 1);
        var p = new int[n];
        for (int i = 0; i < n; i++) p[i] = i + 1;
        for (int i = 0; i < m; i++)
        {
            string[] line = Console.ReadLine().Trim().Split(' ');
            var a = int.Parse(line[0]);
            var b = int.Parse(line[1]);
            if (uf.IsSameGroup(a, b)) continue;
            var counta = uf.getMem(a);
            var countb = uf.getMem(b);
            if (counta == countb)
            {
                var ap = p[uf.Root(a)-1];
                var bp = p[uf.Root(b) -1];
                var tp = Min(ap, bp);
                p[uf.Root(a)-1 ] = tp;
                p[uf.Root(b) -1] = tp;
            }
            else
            {
                if (counta > countb) p[uf.Root(b) -1] = p[uf.Root(a)-1];
                else p[uf.Root(a) -1] = p[uf.Root(b)-1];
            }
            uf.Unite(a, b);
        }
        var ans = new int[n];
        for (int i = 1; i <= n; i++) ans[i - 1] = p[uf.Root(i) - 1];
        Console.WriteLine(string.Join("\n",ans));
    }
}