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)]

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][ay+h+1]-=d
    imos[ax+w+1][ay]-=d
    imos[ax+w+1][ay+h+1]+=d

for i in range(1500):
    for j in range(1500):
        imos[i+1][j]+=imos[i][j]
for i in range(1500):
    for j in range(1500):
        imos[i][j+1]+=imos[i][j]
    
ans=0
for x,y,hp in wal:
    if imos[x][y]<hp:
        ans+=hp-imos[x][y]
print(ans)