N, Q = map(int, input().split())
query = [list(map(int, input().split())) for _ in range(Q)]

imos = [0]*(10**5+1)
for I, S, T in query:
    imos[S] += 1
    imos[T] -= 1
for i in range(1, 10**5+1):
    imos[i] += imos[i-1]

for i in range(10**5+1):
    if 1 <= imos[i]:
        imos[i] = 1/imos[i]

cum = [0]
for i in range(10**5+1):
    cum.append(cum[-1]+imos[i])

def cumQ(L, R):
    return cum[R]-cum[L]

ans = [0]*N
for I, S, T in query:
    ans[I-1] += cumQ(S, T)

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