import heapq
n, m = map(int, input().split())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
a2 = [[a[i], i] for i in range(n)]
b2 = [[b[i], i] for i in range(n)]
a2.sort()
b2.sort()
ls = [list(map(int, input().split())) for _ in range(n)]
ls.sort(key = lambda x: x[1])
flg = [0] * n
h1 = []
h2 = []
idxa = 0
idxb = 0
for t, c in ls:
  while idxa < n:
    if a2[idxa][0] > c:
      break
    heapq.heappush(h1, (-a2[idxa][0])*n+a2[idxa][1])
    idxa += 1
  while idxb < n:
    if b2[idxb][0] > c:
      break
    heapq.heappush(h2, (-b2[idxb][0])*n+b2[idxb][1])
    idxb += 1
  if t:
    while h2:
      tmp = heapq.heappop(h2)
      x, i = divmod(tmp, n)
      x *= -1
      if flg[i] == 0:
        flg[i] = 1
        break
  else:
    while h1:
      tmp = heapq.heappop(h1)
      x, i = divmod(tmp, n)
      x *= -1
      if flg[i] == 0:
        flg[i] = 1
        break
  # print(flg, t, c)
  # print(h1, h2)
print(n - sum(flg))
# print(flg)