Problem:
Selection Sort

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

SelectionSort(A)
1 for i = 0 to A.length-1
2 mini = i
3 for j = i to A.length-1
4 if A[j] < A[mini]
5 mini = j
6 swap A[i] and A[mini]

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

Your program should also print the number of swap operations defined in line 6 of the pseudocode in the case where i ≠ mini.

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 space 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

6
5 6 4 2 1 3

Sample Output 1

1 2 3 4 5 6
4

Sample Input 2

6
5 2 4 6 1 3

Sample Output 2

1 2 3 4 5 6
3

Solution in Ruby (judge verdict: Accepted)

def swap(a, i, j)
  a[i] = a[i] ^ a[j]
  a[j] = a[i] ^ a[j]
  a[i] = a[i] ^ a[j]
end

def selection_sort(a, n)
  swap_count = 0
  (0...n).each {|i|
    minj = i
    (i...n).each {|j|
      minj = j if a[j] < a[minj]
    }
    if i != minj
      swap(a, i, minj)
      swap_count += 1
    end
  }
  swap_count
end

n = gets.to_i
a = gets.split(" ").map(&:to_i)
swap_count = selection_sort(a, n)
puts a.join(" ")
puts swap_count