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 C# (judge verdict: Accepted)

using System;
using System.Linq;



public class Test
{
	public static void Main( )
	{
		var n = int.Parse( Console.ReadLine() );
		var A = Console.ReadLine().Trim().Split().Select( x => int.Parse(x)).ToArray();
		
		int cnt = 0;
		for( var i=0; i<=n-1; i++ ) {
			for( var j=n-1; i+1 <= j; j-- ) {
				if( A[j] < A[j-1] ) {
					swap<int>( ref A[j], ref A[j-1] );
					cnt++;
				}
			}
		}
		
		Console.WriteLine( String.Join( " ", A ) );
		Console.WriteLine( cnt );
		
		return;
	}
	public static void swap<T>( ref T a, ref T b )
	{
		var t = a;
		a = b;
		b = t;
		return;
	}
}