Problem:
Bubble Sort

Write a program of the Bubble Sort algorithm which sorts a sequence A in ascending order. The algorithm should be based on the following pseudocode:

BubbleSort(A)
1 for i = 0 to A.length-1
2 for j = A.length-1 downto i+1
3 if A[j] < A[j-1]
4 swap A[j] and A[j-1]

Note that, indices for array elements are based on 0-origin.

Your program should also print the number of swap operations defined in line 4 of the pseudocode.

Input

The first line of the input includes an integer N, the number of elements in the sequence.

In the second line, N elements of the sequence are given separated by spaces characters.

Output

The output consists of 2 lines.

In the first line, please print the sorted sequence. Two contiguous elements of the sequence should be separated by a space character.

In the second line, please print the number of swap operations.

Constraints

1 ≤ N ≤ 100

Sample Input 1

5
5 3 2 4 1

Sample Output 1

1 2 3 4 5
8

Sample Input 2

6
5 2 4 6 1 3

Sample Output 2

1 2 3 4 5 6
9

Solution in PHP (judge verdict: Accepted)

<?php
 
fscanf(STDIN, '%d', $N);
$line = trim(fgets(STDIN));
$arr = explode(' ', $line);
$cnt = 0;
for ($i = 0, $len = count($arr); $i < $len; $i++) {
    for ($j = $len - 1; $j > $i; $j--) {
        $tmp = $arr[$j];
        if ($arr[$j - 1] > $tmp) {
            $arr[$j] = $arr[$j - 1];
            $arr[$j - 1] = $tmp;
            $cnt++;
        }
    }
}
echo implode(" ", $arr)."\n";
echo $cnt."\n";