N,K = map(int,raw_input().split())
M = [[0]*1001 for i in xrange(1001)]
for loop in xrange(N):
    x,y,hp = map(int,raw_input().split())
    x += 500; y += 500
    M[y][x] = hp

A = [[0]*1002 for i in xrange(1002)]
for loop in xrange(K):
    ax,ay,w,h,d = map(int,raw_input().split())
    ax += 500; ay += 500
    for y in xrange(ay,min(1001,ay+h+1)):
        A[y][ax] += d
        A[y][min(1001,ax+w+2)] -= d
ans = 0
for y in xrange(1001):
    for x in xrange(1001):
        if x > 0: A[y][x] += A[y][x-1]
        ans += max(0, M[y][x]-A[y][x])
print ans