import java.util.*; import java.io.*; public class SelectionSort { public void Select(int[] arr,int n){ int swaps = 0; int tmp; for(int i = 0; i< arr.length-1; i++) { while(arr[i]!=i+1) { tmp = arr[arr[i]-1]; arr[arr[i]-1] = arr[i]; arr[i] = tmp; swaps++; } } System.out.println(swaps); } public static void main(String[] args){ Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int a[] = new int[n]; for(int i = 0 ; i < n ; i++){ a[i] = sc.nextInt(); } SelectionSort sct = new SelectionSort(); sct.Select(a,n); } }