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();

		if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		}
	}
}

 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();

		if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		}
	}
} 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();

		if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		}
	} main {


		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();

		if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		}
	} 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 if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		} a < b && b < c a < b a b b < c b c {
			System.out.printf("Yes\n");
		} System.out.printf("Yes\n") System.out.printf System.out System System.out "Yes\n" {
			System.out.printf("No\n");
		} System.out.printf("No\n") System.out.printf System.out System System.out "No\n" 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();

		if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		}
	}
} 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();

		if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		}
	}
} 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();

		if(a < b && b < c){
			System.out.printf("Yes\n");
		}else{
			System.out.printf("No\n");
		}
	}
}


