import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int num[] = new int[n];
      
      for(int i=0;i<n;i++){
        num[i] = sc.nextInt();
      }
      Arrays.sort(num);
      System.out.print(Math.abs(num[0]-num[n-1]));
      
      
    }
} import java.util.*; util.* java class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int num[] = new int[n];
      
      for(int i=0;i<n;i++){
        num[i] = sc.nextInt();
      }
      Arrays.sort(num);
      System.out.print(Math.abs(num[0]-num[n-1]));
      
      
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int num[] = new int[n];
      
      for(int i=0;i<n;i++){
        num[i] = sc.nextInt();
      }
      Arrays.sort(num);
      System.out.print(Math.abs(num[0]-num[n-1]));
      
      
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int num[] = new int[n];
      
      for(int i=0;i<n;i++){
        num[i] = sc.nextInt();
      }
      Arrays.sort(num);
      System.out.print(Math.abs(num[0]-num[n-1]));
      
      
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int num[] = new int[n]; num new int[n] n for(int i=0;i<n;i++){
        num[i] = sc.nextInt();
      } int i=0; int i=0; i 0 i<n i n i++ i++ i {
        num[i] = sc.nextInt();
      } {
        num[i] = sc.nextInt();
      } num[i] = sc.nextInt() num[i] num i sc.nextInt() sc.nextInt sc Arrays.sort(num) Arrays.sort Arrays num System.out.print(Math.abs(num[0]-num[n-1])) System.out.print System.out System System.out Math.abs(num[0]-num[n-1]) Math.abs Math num[0]-num[n-1] num[0] num 0 num[n-1] num n-1 n 1 String[] args args
import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int num[] = new int[n];
      
      for(int i=0;i<n;i++){
        num[i] = sc.nextInt();
      }
      Arrays.sort(num);
      System.out.print(Math.abs(num[0]-num[n-1]));
      
      
    }
}