import java.util.*;

public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int z = in.nextInt();
		
		if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} import java.util.*; util.* java public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int z = in.nextInt();
		
		if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} Main public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int z = in.nextInt();
		
		if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	} main {
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int z = in.nextInt();
		
		if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	} Scanner in = new Scanner(System.in); in new Scanner(System.in) int x = in.nextInt(); x in.nextInt() in.nextInt in int y = in.nextInt(); y in.nextInt() in.nextInt in int z = in.nextInt(); z in.nextInt() in.nextInt in if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		} x<y && y<z x<y x y y<z y z {
			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 in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int z = in.nextInt();
		
		if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int z = in.nextInt();
		
		if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} Main
import java.util.*;

public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int x = in.nextInt();
		int y = in.nextInt();
		int z = in.nextInt();
		
		if(x<y && y<z){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
}