N,K=map(int,input().split())
wal=[]
for i in range(N):
    x,y,hp=map(int,input().split())
    x,y=x+500,y+500
    wal.append((x,y,hp))

imos=[[0]*1510 for _ in range(1510)]
sm=[[0]*1510 for _ in range(1510)]
for i in range(K):
    ax,ay,w,h,d=map(int,input().split())
    ax,ay=ax+500,ay+500
    imos[ax][ay]+=d
    imos[ax+w+1][ay]-=d
    imos[ax][ay+h+1]-=d
    imos[ax+w+1][ay+h+1]+=d

for i in range(1500):
    for j in range(1500):
        sm[i+1][j+1]=sm[i][j+1]+sm[i+1][j]-sm[i][j]+imos[i][j]

ans=0
for x,y,hp in wal:
    if sm[x+1][y+1]<hp:
        ans+=hp-sm[x+1][y+1]
print(ans)