import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????

		//System.out.println("??\???>>");

		Scanner scan = new Scanner(System.in);

		int intA = scan.nextInt();
		int intB = scan.nextInt();
		int intC = scan.nextInt();

		if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} 
			
		
			

	}

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

	public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????

		//System.out.println("??\???>>");

		Scanner scan = new Scanner(System.in);

		int intA = scan.nextInt();
		int intB = scan.nextInt();
		int intC = scan.nextInt();

		if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} 
			
		
			

	}

} Main public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????

		//System.out.println("??\???>>");

		Scanner scan = new Scanner(System.in);

		int intA = scan.nextInt();
		int intB = scan.nextInt();
		int intC = scan.nextInt();

		if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} 
			
		
			

	} main {
		// TODO ?????????????????????????????????????????????

		//System.out.println("??\???>>");

		Scanner scan = new Scanner(System.in);

		int intA = scan.nextInt();
		int intB = scan.nextInt();
		int intC = scan.nextInt();

		if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} 
			
		
			

	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int intA = scan.nextInt(); intA scan.nextInt() scan.nextInt scan int intB = scan.nextInt(); intB scan.nextInt() scan.nextInt scan int intC = scan.nextInt(); intC scan.nextInt() scan.nextInt scan if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} intA < intB intA intB {
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		} if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			} intB < intC intB intC {
				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" {
			
			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) {
		// TODO ?????????????????????????????????????????????

		//System.out.println("??\???>>");

		Scanner scan = new Scanner(System.in);

		int intA = scan.nextInt();
		int intB = scan.nextInt();
		int intC = scan.nextInt();

		if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} 
			
		
			

	}

} public class Main {

	public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????

		//System.out.println("??\???>>");

		Scanner scan = new Scanner(System.in);

		int intA = scan.nextInt();
		int intB = scan.nextInt();
		int intC = scan.nextInt();

		if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} 
			
		
			

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO ?????????????????????????????????????????????

		//System.out.println("??\???>>");

		Scanner scan = new Scanner(System.in);

		int intA = scan.nextInt();
		int intB = scan.nextInt();
		int intC = scan.nextInt();

		if(intA < intB ){
			
			if(intB < intC){
				System.out.println("Yes");
			}else{				
				System.out.println("No");
			}
		
		}else{
			
			System.out.println("No");
		} 
			
		
			

	}

}