N, Q = map(int, input().split())
IST = [list(map(int, input().split())) for _ in range(Q)]
P = [0 for _ in range(10**5+1)]
for i, s, t in IST:
    P[s] += 1
    P[t] -= 1
S = [0]
for p in P:
    S.append(S[-1]+p)
M = [0]
for s in S:
    if s==0:
        M.append(M[-1])
    else:
        M.append(M[-1]+(1/s))
ans = [0 for _ in range(N)]
for i, s, t in IST:
    ans[i-1] += M[t+1]-M[s+1]
for a in ans:
    print(a)