import java.util.Arrays;
import java.util.Scanner;

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 < a.length; i++) {
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);

        System.out.println(Math.abs(a[n-1]-a[0]));
    }
} import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner 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 < a.length; i++) {
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);

        System.out.println(Math.abs(a[n-1]-a[0]));
    }
} 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 < a.length; i++) {
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);

        System.out.println(Math.abs(a[n-1]-a[0]));
    } main {

        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] a = new int[n];

        for (int i = 0; i < a.length; i++) {
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);

        System.out.println(Math.abs(a[n-1]-a[0]));
    } 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 < a.length; i++) {
            a[i] = sc.nextInt();
        } int i = 0; int i = 0; i 0 i < a.length i a.length a a.length i++ i++ i {
            a[i] = sc.nextInt();
        } {
            a[i] = sc.nextInt();
        } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc Arrays.sort(a) Arrays.sort Arrays a System.out.println(Math.abs(a[n-1]-a[0])) System.out.println System.out System System.out Math.abs(a[n-1]-a[0]) Math.abs Math a[n-1]-a[0] a[n-1] a n-1 n 1 a[0] a 0 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 < a.length; i++) {
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);

        System.out.println(Math.abs(a[n-1]-a[0]));
    }
} 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 < a.length; i++) {
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);

        System.out.println(Math.abs(a[n-1]-a[0]));
    }
} Main
import java.util.Arrays;
import java.util.Scanner;

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 < a.length; i++) {
            a[i] = sc.nextInt();
        }
        Arrays.sort(a);

        System.out.println(Math.abs(a[n-1]-a[0]));
    }
}