import java.util.Scanner;

public class Main {

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

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

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

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

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

} public class Main {

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

} Main
import java.util.Scanner;

public class Main {

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

}
