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 x = gets
   hash[x.to_i] += 1
end
max = 0
xs = hash.sort_by{|k,v|v}.reverse
x = xs.first[1]
mode = xs.take_while{|y|x==y[1]}.map{|x|x[0]}.sort
mode.each do|x|
   puts x
end