import java.util.Arrays;
import java.util.Scanner;
public class Main {
	//public static int N,K,a=-1;
	public static String ans="",s;

	//public static int a[][]=new int[5][5];

	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.Arrays; Arrays java.util import java.util.Scanner; Scanner java.util public class Main {
	//public static int N,K,a=-1;
	public static String ans="",s;

	//public static int a[][]=new int[5][5];

	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 int N,K,a=-1;
	public static String ans="" ans "" s; s 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 int N,K,a=-1;
	public static String ans="",s;

	//public static int a[][]=new int[5][5];

	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 int N,K,a=-1;
	public static String ans="",s;

	//public static int a[][]=new int[5][5];

	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.Arrays;
import java.util.Scanner;
public class Main {
	//public static int N,K,a=-1;
	public static String ans="",s;

	//public static int a[][]=new int[5][5];

	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]));
	}
}