import sys
readline=sys.stdin.readline

N,K=map(int,readline().split())
X,Y,HP=[],[],[]
for _ in range(N):
    x,y,hp=map(int,readline().split())
    x+=500;y+=500
    X.append(x)
    Y.append(y)
    HP.append(hp)
imos=[[0]*2001 for i in range(2001)]
for _ in range(K):
    x,y,w,h,d=map(int,readline().split())
    x+=500;y+=500
    w+=1;h+=1
    imos[x+w][y+h]+=d
    imos[x][y+h]-=d
    imos[x+w][y]-=d
    imos[x][y]+=d
for i in range(2001):
    for j in range(1,2001):
        imos[i][j]+=imos[i][j-1]
for i in range(1,2001):
    for j in range(2001):
        imos[i][j]+=imos[i-1][j]
ans=0
for x,y,hp in zip(X,Y,HP):
    ans+=max(0,hp-imos[x][y])
print(ans)