๋ฐฑ์ค 1302๋ฒ ํ์ด์ฌ
import sys
input = sys.stdin.readline
n = int(input())
books = {}
for _ in range(n):
b = input().strip()
if b in books:
books[b] = books[b] + 1
else:
books[b] = 1
res = {val[0] : val[1] for val in sorted(books.items(), key = lambda x: (-x[1], x[0]))}
# value๋ฅผ ๊ธฐ์ค์ผ๋ก ์ ๋ ฌํ๋ค ๊ฐ์ value์ด๋ฉด key๋ฅผ ์ฌ์ ์์ผ๋ก ์ ๋ ฌ
res_key = list(res.keys())
print(res_key[0])