Problem:
Mode Value

Your task is to write a program which reads a sequence of integers and prints mode values of the sequence.
The mode value is the element which occurs most frequently.

Input

A sequence of integers ai (1 ≤ ai ≤ 100). The number of integers is less than or equals to 100.

Output

Print the mode values. If there are several mode values, print them in ascending order.

Sample Input

5
6
3
5
8
7
5
3
9
7
3
4

Output for the Sample Input

3
5

For example, 3 and 5 respectively occur three times, 7 occurs two times, and others occur only one. So, the mode values are 3 and 5.

Solution in Ruby (judge verdict: Accepted)

input = gets(nil).chomp

o = {}

input.split("\n").each do |line|
  n = line.to_i
  o[n] = 0 unless o[n]
  o[n] += 1
end

m = 0
o.each do |k,v|
  m = v if v > m
end

o.select{|k,v| v == m}.keys.sort.each {|i| puts i}