class Array
  def imos
    h = size
    w = self[0].size

    ret = map(&:dup)

    0.upto(h - 1) do |i|
      1.upto(w - 1) do |j|
        ret[i][j] += ret[i][j - 1]
      end
    end

    1.upto(h - 1) do |i|
      0.upto(w - 1) do |j|
        ret[i][j] += ret[i - 1][j]
      end
    end

    ret
  end
end

geta = 500
S = geta * 3 + 10
N, K = gets.split.map(&:to_i)
E = N.times.map { gets.split.map(&:to_i) }

arr = Array.new(S) { Array.new(S, 0) }

K.times do
  x, y, w, h, d = gets.split.map(&:to_i)
  x += geta
  y += geta

  arr[y][x] += d
  arr[y][x + w + 1] -= d
  arr[y + h + 1][x] -= d
  arr[y + h + 1][x + w + 1] += d
end

arr = arr.imos
ans = 0

E.each do |x, y, hp|
  x += geta
  y += geta
  r_hp = hp - arr[y][x]
  r_hp = 0 if r_hp < 0
  ans += r_hp
end

puts ans