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 = Integer.parseInt(sc.next());
		int[] A = new int[N];
		for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		}
		sc.close();
		Arrays.sort(A);
		System.out.println(Math.abs(A[0] - A[N-1]));
	}
} 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 = Integer.parseInt(sc.next());
		int[] A = new int[N];
		for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		}
		sc.close();
		Arrays.sort(A);
		System.out.println(Math.abs(A[0] - A[N-1]));
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int[] A = new int[N];
		for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		}
		sc.close();
		Arrays.sort(A);
		System.out.println(Math.abs(A[0] - A[N-1]));
	} main {
		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int[] A = new int[N];
		for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		}
		sc.close();
		Arrays.sort(A);
		System.out.println(Math.abs(A[0] - A[N-1]));
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int[] A = new int[N]; A new int[N] N for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			A[i] = Integer.parseInt(sc.next());
		} {
			A[i] = Integer.parseInt(sc.next());
		} A[i] = Integer.parseInt(sc.next()) A[i] A i Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc sc.close() sc.close sc Arrays.sort(A) Arrays.sort Arrays A System.out.println(Math.abs(A[0] - A[N-1])) System.out.println System.out System System.out Math.abs(A[0] - A[N-1]) Math.abs Math A[0] - A[N-1] A[0] A 0 A[N-1] A N-1 N 1 String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int[] A = new int[N];
		for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		}
		sc.close();
		Arrays.sort(A);
		System.out.println(Math.abs(A[0] - A[N-1]));
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int[] A = new int[N];
		for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		}
		sc.close();
		Arrays.sort(A);
		System.out.println(Math.abs(A[0] - A[N-1]));
	}
} Main
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 = Integer.parseInt(sc.next());
		int[] A = new int[N];
		for(int i = 0;i < N;i++) {
			A[i] = Integer.parseInt(sc.next());
		}
		sc.close();
		Arrays.sort(A);
		System.out.println(Math.abs(A[0] - A[N-1]));
	}
}