class Imos2D():
    def __init__(self, W, H):
        self.W = W
        self.H = H
        self.data = [[0] * (W + 1) for w in range(H + 1)]

    def range_add(self, x1, y1, w, h, d):
        x2 = min(x1 + w + 1, self.W)
        y2 = min(y1 + h + 1, self.H)
        data = self.data
        data[y1][x1] += d
        data[y1][x2] -= d
        data[y2][x1] -= d
        data[y2][x2] += d

    def read_all(self):
        decoded = [[0] * self.W for h in range(self.H)]
        current_row = [0] * self.W
        for y, row in enumerate(self.data[:-1]):
            prev_row = current_row
            current_row = decoded[y]
            cum = 0
            for x, val in enumerate(row[:-1]):
                cum += val
                current_row[x] = cum + prev_row[x]
        return decoded


X = 500
Y = 500
N, K = map(int, input().split())
HP = [[0] * (2 * Y + 1) for w in range(2 * X + 1)]
for n in range(N):
    x, y, hp = map(int, input().split())
    HP[y + Y][x + X] = hp
attacks = Imos2D(X * 2 + 1, Y * 2 + 1)
for k in range(K):
    ax, ay, w, h, d = map(int, input().split())
    attacks.range_add(ax + X, ay + Y, w, h, d)
damage = attacks.read_all()
cumsum = 0
for row_d, row_hp in zip(damage, HP):
    for d, hp in zip(row_d, row_hp):
        if hp and hp > d:
            cumsum += hp - d
print(cumsum)