n=int(input())
lst=[]
for i in range(n):
    tmp=0
    s=input()
    for j in s:
        if j=="(":continue
        if j=="^":tmp+=1
        elif j==")":
            lst.append(tmp)
            # print(lst)
            break
def zen(lst):
    ans_lst=dict()
    for i in lst:
        if i not in ans_lst:
            ans_lst[i]=1
        else:ans_lst[i]+=1
    return ans_lst
# print(zen(lst))
zz=zen(lst)
zz1=sorted(zz.items(),reverse=True,key=lambda x:(x[1],x[0]))
print(zz1[0][0])