N,Q=map(int, input().split())
A=[];T=[]
for _ in range(Q):
  i,s,t=map(int, input().split())
  T.append(s)
  T.append(t)
  A.append((i,s,t))
  
T=sorted(list(set(T)))
D={}
for i in range(len(T)):
  D[T[i]]=i

B=[0]*(len(T)+1)
for i,s,t in A:
  s,t=D[s],D[t] 
  B[s]+=1;B[t]-=1

c=0;C=[]
for b in B:
  c+=b 
  C.append(c)

e=0;E=[0]
for i in range(len(T)-1):
  t=T[i+1]-T[i]
  if C[i]!=0:
    e+=t/C[i]
  E.append(e)

ans=[0]*N
for i,s,t in A:
  ans[i-1]+=E[D[t]]-E[D[s]]
for i in ans:
  print(i)