N = int(input())
D = {i : 0 for i in range(999)}
for i in range(N) :
    S = input()
    D[S.count('^')] += 1

a = 0
MAX = max(list(D.values()))
for k in range(999) :
    if MAX <= D[k] :
        a = k
        MAX = D[k]
print(a)