N, Q = gets.split.map(&:to_i)
rui = Array.new(100_010, 0)
scores = Array.new(100_010, 0)
data = []

Q.times do
  i, s, t = gets.split.map(&:to_i)
  rui[s] += 1
  rui[t] -= 1
  data << [i, s, t]
end

1.upto(100_000) do |t|
  rui[t] += rui[t - 1]
end

0.upto(100_000) do |t|
  if rui[t] > 0
    scores[t] = 1.0 / rui[t]
  end
end

rui_scores = [0.0]

scores.each do |x|
  rui_scores << rui_scores.last + x
end

ans = Array.new(N, 0.0)
data.each do |i, s, t|
  ans[i - 1] += rui_scores[t] - rui_scores[s]
end

puts ans