#include<bits/stdc++.h>
using namespace std;
using ll=long long;

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int N,Q;
  cin>>N>>Q;
  vector<array<int,3>>I(Q);
  for(auto &i:I)cin>>i[0]>>i[1]>>i[2],--i[0];
  map<int,int>cnt;
  for(auto i:I){
    cnt[i[1]]+=1;
    cnt[i[2]]-=1;
  }
  vector e_time(1,-1);
  vector e_cnt(1,0.0);
  double c=0;
  for(auto i:cnt){
    if(c==0){
      e_cnt.push_back(0);
    }else{
      e_cnt.push_back((i.first-e_time.back())/c);
    }
    e_time.push_back(i.first);
    c+=i.second;
  }
  for(int i=0;i<e_cnt.size()-1;i++){
    e_cnt[i+1]+=e_cnt[i];
  }
  vector ans(N,0.0);
  for(auto i:I){
    ans[i[0]]+=e_cnt[lower_bound(e_time.begin(),e_time.end(),i[2])-e_time.begin()]-e_cnt[lower_bound(e_time.begin(),e_time.end(),i[1])-e_time.begin()];
  }
  cout<<setprecision(10);
  for(auto i:ans)cout<<i<<'\n';
}