import numpy

n=list(map(int,input().split()))
list1=[]
for _ in range(n[0]):
    list1.append(list(map(int,input().split())))
my_array = numpy.array(list1)
print(numpy.max(numpy.array(numpy.min(my_array, axis = 1))))

import numpy

n, m = map(int, input().split())
arr = []

for _ in range(n):
    arr.append([*map(int, input().split())])
arr = numpy.array(arr)

print(numpy.max(numpy.min(arr, axis=1)))

import numpy as np

n,m=list(map(int,input().split()))

l=[]
for i in range(n):
  x=list(map(int, input().split()))
  l.append(x)
arr=np.array(l)
mx=np.max(np.min(arr,axis=1))
print(mx)

from numpy import array, min, max

n, m = map(int, input().split())
arr = array([input().split() for i in range(n)], dtype=int)

print(max(min(arr, axis = 1)))