#include <bits/stdc++.h>
using namespace std;
#include <atcoder/segtree>
using namespace atcoder;

double op(double a, double b) {
	return a + b;
}
double e() {
	return 0;
}

const int m = 100000;

int main() {
	int n, q;
	cin >> n >> q;
	vector<int> I(q), S(q), T(q);
	vector<vector<pair<int, int>>> dat(n);
	vector<int> imos(m + 2);
	for (int i = 0; i < q; i++) {
		cin >> I[i] >> S[i] >> T[i];
		I[i]--;
		dat[I[i]].push_back(make_pair(S[i], T[i]));
		imos[S[i]]++;
		imos[T[i]]--;
	}
	for (int i = 0; i <= m; i++) {
		imos[i + 1] += imos[i];
	}
	segtree<double, op, e> st(m + 1);
	for (int i = 0; i <= m; i++) {
		if (imos[i] > 0) {
			st.set(i, 1.0 / imos[i]);
		}
	}
	vector<double> ans(n);
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < (int)dat[i].size(); j++) {
			int l = dat[i][j].first;
			int r = dat[i][j].second;
			ans[i] += st.prod(l, r);
		}
	}
	cout << fixed << setprecision(15);
	for (int i = 0; i < n; i++) {
		cout << ans[i] << '\n';
	}
}