N, M = map(int, input().split())
count = 0
for i in range(N):
  RS = input().split()
  R = int(RS[-1])
  S = RS[0]
  rate = (R >= 1200)
  WA = False
  for i in range(4):
    #print(S[i])
    if S[i] == 'x':
      WA = True
    #print(WA)
  if rate and WA:
    count += 1
print(count)