# 制約チェック
line = list(map(int, input().split()))
assert len(line) == 2
N, Q = line
assert 2 <= N <= 200000
assert 2 <= Q <= 200000

p = [0] * (N+2)

for _ in range(N):
    line = list(map(int, input().split()))
    assert len(line) == 3
    L, R, C = line
    assert 1 <= L <= R <= N
    p[L] += 1
    p[R + 1] -= 1

    assert 1 <= C <= 1_000_000_000

for i in range(0, N+1):
    p[i+1] += p[i]
    assert 0 <= p[i] <= 5
assert 0 <= p[N+1] <= 5

for _ in range(Q):
    line = list(map(int, input().split()))
    assert len(line) == 2
    a, b = line
    assert 1 <= a < b <= N