import sys
input = sys.stdin.readline

n, k = map(int, input().split())
M = []
for _ in range(n):
    x, y, h = map(int, input().split())
    x += 500
    y += 500
    M.append((x, y, h))
F = [[0 for _ in range(1002)] for _ in range(1002)]
for _ in range(k):
    sx, sy, ww, hh, d = map(int, input().split())
    sx += 500
    sy += 500
    F[sx][sy] -= d
    F[min(sx + ww + 1, 1001)][sy] += d
    F[sx][min(sy + hh + 1, 1001)] += d
    F[min(sx + ww + 1, 1001)][min(sy + hh + 1, 1001)] -= d
for i in range(1002):
    for j in range(1001):
        F[i][j + 1] += F[i][j]
for j in range(1002):
    for i in range(1001):
        F[i + 1][j] += F[i][j]
ans = 0
for i in range(n):
    x, y, h = M[i]
    d = F[x][y]
    h = max(h + d, 0)
    ans += h
print(ans)