n, Q = map(int, input().split())
imos = [0] * 100001
ist = [list(map(int, input().split())) for _ in range(Q)]
for i, s, t in ist:
    imos[s] += 1
    imos[t] -= 1

for i in range(1, 100001):
    imos[i] += imos[i - 1]

tot = [0]
for i in imos:
    tot.append(tot[-1] + 1 / i if i else 0)

ans = [0] * n
for i, s, t in ist:
    ans[i - 1] += tot[t] - tot[s]

print(*ans, sep="\n")