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;

namespace ALDS1_2_A
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = int.Parse(Console.ReadLine());
            var a = Array.ConvertAll(Console.ReadLine().Split(' '), int.Parse);
            int cnt = 0;
            for (int i = 0; i < n - 1; i++)
            {
                for (int j = n - 1; j > i; j--)
                {
                    if (a[j] < a[j-1])
                    {
                        a[j-1] ^= a[j];
                        a[j] ^= a[j-1];
                        a[j-1] ^= a[j];
                        cnt++;
                    }
                }
            }
            Console.Write(a[0]);
            for (int i = 1; i < n; i++) Console.Write(" " + a[i]);
            Console.WriteLine();
            Console.WriteLine(cnt);
        }
    }
}