N, K = gets.split.take(2).map(&:to_i)
Monsters = N.times.map{ gets.split.take(3).map(&:to_i) }
Spells = K.times.map{ gets.split.take(5).map(&:to_i) }
M = 1001

cusums = (M + 1).times.map { [0] * (M + 1) }
# 座標ごとの総ダメージの累積和
Spells.each{|spell|
  x, y, w, h, d = spell
  x += 500
  y += 500
  xx = [M, x + w + 1].min
  yy = [M, y + h + 1].min
  cusums[x][y] += d
  cusums[xx][yy] += d
  cusums[xx][y] -= d
  cusums[x][yy] -= d
}
M.times{|x|
  M.times{|y|
    cusums[x][y + 1] += cusums[x][y]
  }
}
M.times{|y|
  M.times{|x|
    cusums[x + 1][y] += cusums[x][y]
  }
}

# 残り体力の合計
ans = 0
Monsters.each{|monster|
  x, y, hp = monster
  x += 500
  y += 500
  ans += [0, hp - cusums[x][y]].max
}
p ans