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)

hash = Hash.new(0)
while true do
  num = gets
  break if num == nil
  hash[num.to_sym] += 1
end
hash = hash.sort
hash = hash.sort{|a,b| b[1]<=>a[1] }
max = 0
hash.each do |key, val|
  break if max > val
  puts key
  max = val
end