import sequtils,strutils
var
    N = stdin.readline.parseInt
    A : array[1001,int]
    a : int
    ans,p : int
    
for n in 1..N:
    a = stdin.readline.count('^')
    A[a] += 1
for i in 0..1000:
    if p <= A[i]:
        p = A[i]
        ans = i
echo ans