import java.util.Scanner;


public class Main {
	
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		
		final long a = sc.nextLong();
		final long b = sc.nextLong();
		final long c = sc.nextLong();
		
		if(a < b && b < c){
			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 sc = new Scanner(System.in);
		
		final long a = sc.nextLong();
		final long b = sc.nextLong();
		final long c = sc.nextLong();
		
		if(a < b && b < c){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
		
		
		
	}
	
} Main public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		
		final long a = sc.nextLong();
		final long b = sc.nextLong();
		final long c = sc.nextLong();
		
		if(a < b && b < c){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
		
		
		
	} main {
		Scanner sc = new Scanner(System.in);
		
		final long a = sc.nextLong();
		final long b = sc.nextLong();
		final long c = sc.nextLong();
		
		if(a < b && b < c){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
		
		
		
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final long a = sc.nextLong(); a sc.nextLong() sc.nextLong sc final long b = sc.nextLong(); b sc.nextLong() sc.nextLong sc final long c = sc.nextLong(); c sc.nextLong() sc.nextLong 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" String args[] args public class Main {
	
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		
		final long a = sc.nextLong();
		final long b = sc.nextLong();
		final long c = sc.nextLong();
		
		if(a < b && b < c){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
		
		
		
	}
	
} public class Main {
	
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		
		final long a = sc.nextLong();
		final long b = sc.nextLong();
		final long c = sc.nextLong();
		
		if(a < b && b < c){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
		
		
		
	}
	
} Main
import java.util.Scanner;


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