import numpy as np
import sys
input = sys.stdin.buffer.readline
sys.setrecursionlimit(10 ** 7)
U = 1000

N, K = map(int, input().split())
xyh = np.array([input().split() for _ in range(N)], dtype=np.int64)
x, y, h, w, d = np.array([input().split() for _ in range(K)], dtype=np.int64).T
x += U
y += U

G = np.zeros((2*U+2, 2*U+2), dtype=np.int64)
np.add.at(G, (x, y), d)
np.add.at(G, (x + h + 1, y), -d)
np.add.at(G, (x, y + w + 1), -d)
np.add.at(G, (x + h + 1, y + w + 1), d)
np.cumsum(G, axis=0, out=G)
np.cumsum(G, axis=1, out=G)

x, y, h = xyh.T
x += U
y += U
rest = h - G[x, y]
rest[rest < 0] = 0
print(rest.sum())