import sys
import heapq
input = sys.stdin.readline
N = int(input())
que = []
for i in range(N) :
table = list(map(int, input().split()))
for k in range(N):
heapq.heappush(que, -table[k])
for i in range(N):
if i == N - 1:
print(-heapq.heappop(que))
heapq.heappop(que)
import sys
input = sys.stdin.readline
import heapq
N = int(input())
que = []
for _ in range(N):
numbers = list(map(int, input().split()))
if not que:
for number in numbers:
heapq.heappush(que, number)
else:
for number in numbers:
if que[0] < number:
heapq.heappush(que, number)
heapq.heappop(que)
print(que[0])