N,Q = map(int,input().split())

q = []
C = 10 ** 5
num = [0] * (C + 2)
for _ in range(Q):
    i,s,t = map(int,input().split())
    num[s] += 1
    num[t] -= 1
    q.append((i,s,t))

for i in range(C + 1):
    num[i + 1] += num[i]
S = [0] * (C + 1)
S[0] = 1 / num[0] if num[0] != 0 else 0
for i in range(C):
    if num[i + 1] != 0:
        u = 1 / num[i + 1]
    else:
        u = 0
    S[i + 1] = S[i] + u
ans = [0] * (N + 1)
for i,s,t in q:
    if s == 0:
        ans[i] += S[t - 1]
    else:
        ans[i] += S[t - 1] - S[s- 1]
for i in range(N):
    print(ans[i + 1])