import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		sc.useDelimiter("\\s");
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		sc.useDelimiter("\\s");
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		sc.useDelimiter("\\s");
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		sc.useDelimiter("\\s");
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) sc.useDelimiter("\\s") sc.useDelimiter sc "\\s" int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} a < b && b < c a < b a b b < c b c {
			System.out.println("Yes");
		} System.out.println("Yes") System.out.println System.out System System.out "Yes" {
			System.out.println("No");
		} System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		sc.useDelimiter("\\s");
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		sc.useDelimiter("\\s");
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

} Main
import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		sc.useDelimiter("\\s");
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

}