using System;

public class P
{
    public int id { get; set; }
    public int s { get; set; }
    public int t { get; set; }
}

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var q = int.Parse(line[1]);
        getAns(n, q);
    }
    static void getAns(int n, int q)
    {
        var ps = new P[q];
        var stmax = 100010;
        var map = new int[stmax];
        for (int i = 0; i < q; i++)
        {
            string[] line = Console.ReadLine().Trim().Split(' ');
            var a = int.Parse(line[0]) - 1;
            var b = int.Parse(line[1]);
            var c = int.Parse(line[2]);
            map[b]++;
            map[c]--;
            ps[i] = new P { id = a, s = b, t = c };
        }
        for (int i = 1; i < stmax; i++) map[i] += map[i - 1];
        var map2 = new double[stmax];
        for (int i = 0; i < stmax; i++) map2[i] = map[i] == 0 ? 0 : 1d / map[i];
        var map3 = new double[stmax + 1];
        map3[0] = 0d;
        for (int i = 1; i < stmax + 1; i++) map3[i] = map3[i - 1] + map2[i - 1];
        var ans = new double[n];
        foreach (var x in ps) ans[x.id] += map3[x.t] - map3[x.s];
        Console.WriteLine(string.Join("\n", ans));
    }
}