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.Collections.Generic;
using System.Linq;

namespace CSharpSample01
{
    
    
    class Program
    {
        static int ch_cnt = 0;

        static void Bubble_Sort(int[] data_ary)
        {
            int length = data_ary.Count();
            int index = 0;
           
            //入れ替え作業を要素数回繰り返す
            for(int i = 0; i < length; i++)
            {
                for(index = length - 1; index >= 1; index--)
                {
                    //交換
                    if(data_ary[index - 1] > data_ary[index])
                    {
                        ch_cnt++;
                        int tmp = data_ary[index];
                        data_ary[index] = data_ary[index - 1];
                        data_ary[index - 1] = tmp;
                    }
                }
                
            }
            
        }
        
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int[] data_ary = Console.ReadLine().Split(' ').Select(x => int.Parse(x)).ToArray();

            Bubble_Sort(data_ary);

            Console.WriteLine(String.Join(" ", data_ary));
            Console.WriteLine(ch_cnt);
            
        }
    }
}