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 PHP (judge verdict: Time Limit Exceeded)

<?php
$list = array();
    while(true)
    {
        $list = trim(fgets(STDIN));
        if ($list === '0')
        {
            break;
        }
        if ($list !== ""){
          $array[] = $list;
        }
    }
$list = $array;
$ans = array();
foreach($list as $value){
  $count = 0;
  $check = $value;
  $ans[] = $value - $count;
}
$ans = implode(" ", $ans);
echo $ans;
?>