import sys
import numpy as np

input = sys.stdin.readline

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

enemies = [[0] * 1002 for _ in range(1002)]
damages = [[0] * 1002 for _ in range(1002)]
for _ in range(N):
    x, y, hp = map(int, input().split())
    enemies[y + 500][x + 500] = hp
enemies = np.array(enemies)

for _ in range(K):
    ax, ay, w, h, d = map(int, input().split())
    ax += 500
    ay += 500
    axw = min(ax + w + 1, 1001)
    ayh = min(ay + h + 1, 1001)
    damages[ay][ax] += d
    damages[ayh][ax] -= d
    damages[ay][axw] -= d
    damages[ayh][axw] += d
damages = np.array(damages)

np.cumsum(damages, axis=0, out=damages)
np.cumsum(damages, axis=1, out=damages)
print(np.sum(np.maximum(enemies - damages, np.zeros_like(enemies, dtype=int))))