import java.util.Scanner;

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

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