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)

ary = []
count = Hash.new(0)
while tmp = gets
  break if tmp.to_i == 0
  ary << tmp.to_i
end

ary.each do |ary_i|
  count[ary_i] += 1
end

max = count.map(&:last).max
# p count.select{|_,v| v == max }
count.select{|_,v| v==max}.sort_by{|k,_| k }.each do |k,_|
  puts k
end