import java.util.*;
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<N;i++){
      A[i] = sc.nextInt();
    }
    Arrays.sort(A);
    System.out.println(Math.abs(A[N-1]-A[0]));
  }
}
     import java.util.*; util.* java 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<N;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<N;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<N;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<N;i++){
      A[i] = sc.nextInt();
    } int  i= 0; int  i= 0; i 0 i<N i N 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<N;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<N;i++){
      A[i] = sc.nextInt();
    }
    Arrays.sort(A);
    System.out.println(Math.abs(A[N-1]-A[0]));
  }
} Main
import java.util.*;
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<N;i++){
      A[i] = sc.nextInt();
    }
    Arrays.sort(A);
    System.out.println(Math.abs(A[N-1]-A[0]));
  }
}
    
