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)

# coding: utf-8
count = {}
while line = gets
  n = line.to_i
  if count.key?(n)
    count[n] +=  1
  else
    count[n] = 1
  end
end

# 最大値操作
max_array = []
max_value = 0
count.each do |k,v|
  if max_value < v
    max_value = v
    max_array.clear
    max_array << k
  elsif max_value == v
    max_array << k
  end
end

puts max_array.sort.join("\n")