N,K = map(int,input().split())
Z = [list(map(int,input().split())) for _ in range(N)]
X,Y,HP = [list(i) for i in zip(*Z)]
imos = [[0] * 2000 for _ in range(2000)]
for _ in range(K):
    AX,AY,W,H,D = map(int,input().split())
    AX += 500
    AY += 500
    imos[AX][AY] += D
    imos[AX][AY+H+1] -= D
    imos[AX+W+1][AY] -= D
    imos[AX+W+1][AY+H+1] += D
for i in range(2000):
    for j in range(2000):
        imos[i][j] += imos[i][j-1]
for i in range(2000):
    for j in range(2000):
        imos[i][j] += imos[i-1][j]
ans = 0
for i in range(N):
    BX = X[i] + 500
    BY = Y[i] + 500
    ans += max(0, HP[i] - imos[BX][BY])
print(ans)