import sys
input=lambda: sys.stdin.readline().rstrip()
n,k=map(int,input().split())
XY=[]
for _ in range(n):
  XY.append(tuple(map(int,input().split())))
T=[[0]*(1502) for _ in range(1502)]
for _ in range(k):
  ax,ay,w,h,d=map(int,input().split())
  ax+=500
  ay+=500
  T[ax][ay]+=d
  T[ax+w+1][ay]-=d
  T[ax][ay+h+1]-=d
  T[ax+w+1][ay+h+1]+=d
for i in range(1502):
  for j in range(1,1502):
    T[i][j]+=T[i][j-1]
for i in range(1502):
  for j in range(1,1502):
    T[j][i]+=T[j-1][i]
ans=0
for x,y,hp in XY:
  x+=500
  y+=500
  ans+=max(0,hp-T[x][y])
print(ans)