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 Python3 (judge verdict: Accepted)

#! /usr/bin/python
# -*- coding: utf-8 -*-

n=int(input()) # 数列の長さ
A=list(map(int, input().split())) # 空白を区切文字として配列に格納

tmp = 0
cnt = 0
flag = 1

while flag:
    flag = 0
    for i in range(1, n):
        j = n - i
        if A[j] < A[j-1]:
            tmp = A[j]
            A[j] = A[j-1]
            A[j-1] = tmp
            flag = 1
            cnt += 1
print(*A)
print(cnt)