import java.util.*;

public class Main {

  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();
    }

    sc.close();
    
    Arrays.sort(A);

    System.out.println(Math.abs(A[0] - A[N-1]));

  }

} import java.util.*; util.* java public class Main {

  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();
    }

    sc.close();
    
    Arrays.sort(A);

    System.out.println(Math.abs(A[0] - A[N-1]));

  }

} Main 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();
    }

    sc.close();
    
    Arrays.sort(A);

    System.out.println(Math.abs(A[0] - A[N-1]));

  } main {

    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();
    }

    sc.close();
    
    Arrays.sort(A);

    System.out.println(Math.abs(A[0] - A[N-1]));

  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int[] A = new int[N]; A new int[N] N for (int i = 0; i < N; i++) {
      A[i] = sc.nextInt();
    } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
      A[i] = sc.nextInt();
    } {
      A[i] = sc.nextInt();
    } A[i] = sc.nextInt() A[i] A i sc.nextInt() sc.nextInt sc sc.close() sc.close sc Arrays.sort(A) Arrays.sort Arrays A System.out.println(Math.abs(A[0] - A[N-1])) System.out.println System.out System System.out Math.abs(A[0] - A[N-1]) Math.abs Math A[0] - A[N-1] A[0] A 0 A[N-1] A N-1 N 1 String[] args args public class Main {

  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();
    }

    sc.close();
    
    Arrays.sort(A);

    System.out.println(Math.abs(A[0] - A[N-1]));

  }

} public class Main {

  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();
    }

    sc.close();
    
    Arrays.sort(A);

    System.out.println(Math.abs(A[0] - A[N-1]));

  }

} Main
import java.util.*;

public class Main {

  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();
    }

    sc.close();
    
    Arrays.sort(A);

    System.out.println(Math.abs(A[0] - A[N-1]));

  }

}