import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;

        final int[] A = new int[N];
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        }

        System.out.println(max - min);
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;

        final int[] A = new int[N];
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        }

        System.out.println(max - min);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;

        final int[] A = new int[N];
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        }

        System.out.println(max - min);
    } main {
        Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;

        final int[] A = new int[N];
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        }

        System.out.println(max - min);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int min = Integer.MAX_VALUE; min Integer.MAX_VALUE Integer Integer.MAX_VALUE int max = Integer.MIN_VALUE; max Integer.MIN_VALUE Integer Integer.MIN_VALUE final int[] A = new int[N]; A new int[N] N for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        } {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc min = Math.min(min, a) min Math.min(min, a) Math.min Math min a max = Math.max(max, a) max Math.max(max, a) Math.max Math max a System.out.println(max - min) System.out.println System.out System System.out max - min max min String[] args args public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;

        final int[] A = new int[N];
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        }

        System.out.println(max - min);
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;

        final int[] A = new int[N];
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        }

        System.out.println(max - min);
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int min = Integer.MAX_VALUE;
        int max = Integer.MIN_VALUE;

        final int[] A = new int[N];
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            min = Math.min(min, a);
            max = Math.max(max, a);
        }

        System.out.println(max - min);
    }
}
