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)

#main
h = Hash.new
h.default = 0
arr = Array.new
while n = gets
  arr << n.to_i
end
arr.each do |i|
  h[i] += 1
end
g = h.to_a.sort{|a, b| b[1] <=> a[1]}
i = 0
f = Array.new
while g[0][1] == g[i][1]
  f << g[i][0]
  i += 1
end
puts f.sort.join("\n")