
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		}
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		}
	}
} Main public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		}
	} main {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		}
	} try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		} {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		} Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int min = Integer.MAX_VALUE; min Integer.MAX_VALUE Integer Integer.MAX_VALUE int max = 0; max 0 for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			} {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			} int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc if (a < min) {
					min = a;
				} a < min a min {
					min = a;
				} min = a min a if (max < a) {
					max = a;
				} max < a max a {
					max = a;
				} max = a max a System.out.println(max - min) System.out.println System.out System System.out max - min max min String[] args args public class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		}
	}
} public class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		}
	}
} Main

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();

			int min = Integer.MAX_VALUE;
			int max = 0;
			for (int i = 0; i < n; i++) {
				int a = sc.nextInt();
				if (a < min) {
					min = a;
				}
				if (max < a) {
					max = a;
				}
			}
			System.out.println(max - min);
		}
	}
}
