n = int(input())
data = []
for x in range(0,n):
    data.append(input().split(" "))
num = [x for sublst in data for x in sublst if x.isdigit()]
print(max(set(num), key=num.count))

import collections
num=filter(lambda x:x.isdigit(),open("a.dat").read().split())
print(collections.Counter(num).most_common(1))

set([1,1,2,1,2])->set(1,2)

def II():
    while 1:
       for i in input().split():
          if i.isdigit()
              yield i
a={}
for i in II():
    if i in a:
       a[i]+=1
    else:
       a[i]=0
print(max(a.items(),key=lambda x:x[1]))