import sequtils,strutils,strscans,algorithm,math,future,macros
# import sets,queues,tables,nre,pegs,rationals
template get*():string = stdin.readLine() #.strip()
macro unpack*(rhs: seq,cnt: static[int]): auto =
  let t = genSym(); result = quote do:(let `t` = `rhs`;())
  for i in 0..<cnt: result[0][1].add(quote do:`t`[`i`])
template times*(n:int,body:untyped): untyped = (for _ in 0..<n: body)
template `max=`*(x,y:typed):void = x = max(x,y)
template `min=`*(x,y:typed):void = x = min(x,y)

let # N,K<1e6   |X,Y|,W,H<=500   HP,D<1e5
  (N,K) = get().split().map(parseInt).unpack(2)
  ene_XYHP = newSeqWith(N,get().split().map(parseInt))
  my_XYWHD = newSeqWith(K,get().split().map(parseInt))
  # [X,X+W] [Y,Y+W] に D 倒れていない敵の体力の合計
var field = newSeqWith(1001,newSeqWith(1001,0))
for XYWHD in my_XYWHD:
  let (X,Y,W,H,D) = XYWHD.unpack(5)
  for x in X..min(500,X+W):
    for y in Y..min(500,Y+H):
      field[x+500][y+500] += D
var damageSum = 0
for XYHP in ene_XYHP:
  let
    (X,Y,HP) = XYHP.unpack(3)
    D = field[X+500][Y+500]
  damageSum += max(0,HP - D)
echo damageSum