import java.util.Scanner;
public class Main {

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

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

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

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

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

} public class Main {

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

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

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

}