import java.util.*;
import java.util.Collections;
import java.util.ArrayList;

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

        int N = sc.nextInt();
        ArrayList<Integer> list = new ArrayList<Integer>();

        for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        }

        Collections.sort(list);

        System.out.println(list.get(N-1) - list.get(0));
    }
} import java.util.*; util.* java import java.util.Collections; Collections java.util import java.util.ArrayList; ArrayList java.util public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        ArrayList<Integer> list = new ArrayList<Integer>();

        for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        }

        Collections.sort(list);

        System.out.println(list.get(N-1) - list.get(0));
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        ArrayList<Integer> list = new ArrayList<Integer>();

        for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        }

        Collections.sort(list);

        System.out.println(list.get(N-1) - list.get(0));
    } main {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        ArrayList<Integer> list = new ArrayList<Integer>();

        for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        }

        Collections.sort(list);

        System.out.println(list.get(N-1) - list.get(0));
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc ArrayList<Integer> list = new ArrayList<Integer>(); list new ArrayList<Integer>() for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            list.add(sc.nextInt());
        } {
            list.add(sc.nextInt());
        } list.add(sc.nextInt()) list.add list sc.nextInt() sc.nextInt sc Collections.sort(list) Collections.sort Collections list System.out.println(list.get(N-1) - list.get(0)) System.out.println System.out System System.out list.get(N-1) - list.get(0) list.get(N-1) list.get list N-1 N 1 list.get(0) list.get list 0 String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        ArrayList<Integer> list = new ArrayList<Integer>();

        for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        }

        Collections.sort(list);

        System.out.println(list.get(N-1) - list.get(0));
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        ArrayList<Integer> list = new ArrayList<Integer>();

        for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        }

        Collections.sort(list);

        System.out.println(list.get(N-1) - list.get(0));
    }
} Main
import java.util.*;
import java.util.Collections;
import java.util.ArrayList;

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

        int N = sc.nextInt();
        ArrayList<Integer> list = new ArrayList<Integer>();

        for(int i=0; i<N; i++){
            list.add(sc.nextInt());
        }

        Collections.sort(list);

        System.out.println(list.get(N-1) - list.get(0));
    }
}