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)

num_count = Hash.new(0)

while line = gets
  num_count[line.to_i] += 1
end

max_count = num_count.max_by { |_, val| val }[1]
num_count.select { |_, val|  val == max_count }
  .sort_by { |ary| ary[0] }.each { |ary| puts ary[0] }