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: Wrong Answer)

#!/usr/local/bin/ruby
num = Hash.new(0)
max = 0
while (n=gets.to_i)!=0
#while (n=gets.to_i) != true
 num[n] += 1
end
num.to_a.sort{|p,q| -(p[1]<=>q[1]) +(p[0]<=>q[0])}.each do |key,value|
 if value >= max
  max = value
  puts key
 else
  break
 end
end