pub mod scanner {

    pub struct Scanner {
        buf: Vec<String>,
    }

    impl Scanner {
        pub fn new() -> Self {
            Self { buf: vec![] }
        }

        pub fn new_from(source: &str) -> Self {
            let source = String::from(source);
            let buf = Self::split(source);
            Self { buf }
        }

        pub fn next<T: std::str::FromStr>(&mut self) -> T {
            loop {
                if let Some(x) = self.buf.pop() {
                    return x.parse().ok().expect("");
                }
                let mut source = String::new();
                std::io::stdin().read_line(&mut source).expect("");
                self.buf = Self::split(source);
            }
        }

        fn split(source: String) -> Vec<String> {
            source
                .split_whitespace()
                .rev()
                .map(String::from)
                .collect::<Vec<_>>()
        }
    }
}

use crate::scanner::Scanner;
use std::io::Write;
fn main() {
    let mut scanner = Scanner::new();
    let out = std::io::stdout();
    let mut out = std::io::BufWriter::new(out.lock());
    let t: usize = 1;
    for _ in 0..t {
        solve(&mut scanner, &mut out);
    }
}
fn solve(scanner: &mut Scanner, out: &mut std::io::BufWriter<std::io::StdoutLock>) {
    let n: usize = scanner.next();
    let q: usize = scanner.next();
    let qs = (0..q)
        .map(|_| {
            (
                scanner.next::<usize>() - 1,
                scanner.next::<usize>(),
                scanner.next::<usize>(),
            )
        })
        .collect::<Vec<_>>();
    let max = 100010;
    let mut count = vec![0; max + 10];
    for &(_, s, t) in &qs {
        count[s] += 1;
        count[t] -= 1;
    }
    let mut sum = vec![0.0; max + 10];
    for i in 0..max {
        count[i + 1] += count[i];
        sum[i + 1] = sum[i]
            + if count[i] > 0 {
                1.0 / count[i] as f64
            } else {
                0.0
            };
    }
    let mut ans = vec![0.0; n];
    for &(ni, s, t) in &qs {
        ans[ni] += sum[t] - sum[s];
    }
    for i in 0..ans.len() {
        writeln!(out, "{:.14}", ans[i]).unwrap();
    }
}