import collections
n=int(input())
ls=[]
for i in range(n):
    ls.append(input())
cnt=0
cls=[]
for j in range(n):
    for i in range(len(ls[j])):
        if ls[j][i]=="^":
            cnt=cnt+1
        if ls[j][i]==")":
            cls.append(cnt)
            cnt=0

c=collections.Counter(cls)
mx=0
for num,cont in c.most_common():
    if mx<cont:
        mx=cont
        print(num)