#include <stdio.h>

int main () {
  int n = 0;
  int q = 0;
  int ist[100000][3] = {};
  
  int res = 0;
  
  double ans[100000] = {};
  int cnt[100001] = {};
  double sum[100001] = {};
  
  res = scanf("%d", &n);
  res = scanf("%d", &q);
  for (int i = 0; i < q; i++) {
    res = scanf("%d", ist[i]);
    res = scanf("%d", ist[i]+1);
    res = scanf("%d", ist[i]+2);
    ist[i][0]--;
    cnt[ist[i][1]]++;
    cnt[ist[i][2]]--;
  }
  
  for (int i = 0; i < 100000; i++) {
    if (cnt[i] > 0) {
      sum[i+1] = sum[i]+1.0/((double)cnt[i]);
    }
    cnt[i+1] += cnt[i];
  }
  
  for (int i = 0; i < q; i++) {
    ans[ist[i][0]] += sum[ist[i][2]]-sum[ist[i][1]];
  }
  
  for (int i = 0; i < n; i++) {
    printf("%.16lf\n", ans[i]);
  }
  
  return 0;
}