using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (n, q) = (c[0], c[1]);
        var map = NArr(q);
        var num = new int[100_001];
        foreach (var que in map)
        {
            ++num[que[1]];
            --num[que[2]];
        }
        for (var i = 1; i < num.Length; ++i) num[i] += num[i - 1];
        var show = new double[num.Length + 1];
        for (var i = 0; i < num.Length; ++i)
        {
            if (num[i] > 0) show[i + 1] += 1.0 / num[i];
        }
        for (var i = 1; i < show.Length; ++i) show[i] += show[i - 1];
        var ans = new double[n];
        foreach (var que in map)
        {
            ans[que[0] - 1] += show[que[2]] - show[que[1]];
        }
        WriteLine(string.Join("\n", ans));
    }
}