N,K = map(int,input().split())
lsHP = []
for i in range(N):
    X,Y,HP = map(int,input().split())
    X += 500
    Y += 500
    lsHP.append((X,Y,HP))

lsD = [[0]*(1002) for i in range(1002)]

for i in range(K):
    ax,ay,w,h,d = map(int,input().split())
    ax += 500
    ay += 500
    lx = ax
    rx = min(1001,lx+w+1)
    ly = ay
    ry = min(1001,ly+h+1)
    for j in range(lx,rx):
        lsD[j][ly] += d
        lsD[j][ry] -= d

for i in range(1002):
    for j in range(1,1002):
        lsD[i][j] += lsD[i][j-1]

ans = 0
for i in range(N):
    x,y,hp = lsHP[i]
    ans += max(0,hp-lsD[x][y])
print(ans)