import java.util.*;
public class Main {
    public static void main(String [] args) {
        Scanner sc = new Scanner(System.in);
        int min=999999999,max=0;
        int N = sc.nextInt();
        for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        }
        System.out.println(Math.abs(max-min));
    }
} import java.util.*; util.* java public class Main {
    public static void main(String [] args) {
        Scanner sc = new Scanner(System.in);
        int min=999999999,max=0;
        int N = sc.nextInt();
        for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        }
        System.out.println(Math.abs(max-min));
    }
} Main public static void main(String [] args) {
        Scanner sc = new Scanner(System.in);
        int min=999999999,max=0;
        int N = sc.nextInt();
        for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        }
        System.out.println(Math.abs(max-min));
    } main {
        Scanner sc = new Scanner(System.in);
        int min=999999999,max=0;
        int N = sc.nextInt();
        for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        }
        System.out.println(Math.abs(max-min));
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int min=999999999 min 999999999 max=0; max 0 int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        } {
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        } int num = sc.nextInt(); num sc.nextInt() sc.nextInt sc if(max<num) max = num; max<num max num max = num max num if(min>num) min = num; min>num min num min = num min num System.out.println(Math.abs(max-min)) System.out.println System.out System System.out Math.abs(max-min) Math.abs Math max-min max min String [] args args public class Main {
    public static void main(String [] args) {
        Scanner sc = new Scanner(System.in);
        int min=999999999,max=0;
        int N = sc.nextInt();
        for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        }
        System.out.println(Math.abs(max-min));
    }
} public class Main {
    public static void main(String [] args) {
        Scanner sc = new Scanner(System.in);
        int min=999999999,max=0;
        int N = sc.nextInt();
        for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        }
        System.out.println(Math.abs(max-min));
    }
} Main
import java.util.*;
public class Main {
    public static void main(String [] args) {
        Scanner sc = new Scanner(System.in);
        int min=999999999,max=0;
        int N = sc.nextInt();
        for(int i=0;i<N;i++){
            int num = sc.nextInt();
            if(max<num) max = num;
            if(min>num) min = num;
        }
        System.out.println(Math.abs(max-min));
    }
}
