#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
using namespace std;

int main(){
    int n, q; cin >> n >> q;
    vector<int> id(q), s(q), t(q);
    for(int i = 0; i < q; i++){
        cin >> id[i] >> s[i] >> t[i];
        id[i]--; s[i]++; t[i]++;
    }

    const int lim = 100010;
    vector<double> tot(lim, 0.0);
    vector<int> cnt(lim, 0);
    for(int i = 0; i < q; i++){
        cnt[s[i]]++;
        cnt[t[i]]--;
    }
    for(int i = 1; i < lim; i++) cnt[i] += cnt[i-1];
    for(int i = 0; i < lim-5; i++){
        if(0 < cnt[i]) tot[i] += 1.0/cnt[i];
        tot[i+1] += tot[i];
    }

    vector<double> ans(n, 0.0);
    for(int i = 0; i < q; i++){
        ans[id[i]] += tot[t[i]-1]-tot[s[i]-1];
    }

    for(auto &it: ans) cout << fixed << setprecision(10) << it << '\n';
    return 0;
}