I,O = open("Input.txt",'r'), open("Output.txt",'w')
limit = int(I.readline())
u =0
lst, rnk, num = [], [], []
for _ in xrange(1000):
    lst.append(0)

while u < limit:
    for x in I.readline().split():
        lst[int(x)-1] += 1
    u += 1

for i, x in enumerate(lst):
    if x == max(lst):
        O.write(str(i+1)+"\n")