n = int(input())
count = {}
for i in range(n):
  eyes = input().count('^')

  if eyes in count:
    count[eyes] += 1
  else:
    count[eyes] = 1

maximum = 0
ans = 0

for k, v in count.items():
  if v >= maximum:
    if k >= ans:
      maximum = v
      ans = k

print(ans)